Months after Damon (Ian Somerhalder) and Enzo (Michael Malarkey) mysteriously vanished from the Armory vault, Stefan (Paul Wesley) tirelessly pushes forward with their search, while Bonnie (Kat Graham) struggles holding onto hope that they will be found. Meanwhile, a dangerous encounter with an unexpected visitor leaves Caroline (Candice King) and Alaric (Matt Davis) fearing that someone – or something – may be targeting their family. Finally, after following some mysterious clues, Stefan realizes that whatever has a hold of his brother may have a more damaging grip over him than he could have ever imagined.
After learning that someone from Stefan’s (Paul Wesley) past may be Damon (Ian Somerhalder) and Enzo’s (Michael Malarkey) next target, Stefan, Bonnie (Kat Graham) and Caroline (Candice King) head to North Carolina. There, Bonnie takes drastic measures in an attempt to break Enzo free of whatever has a hold over him. At the Armory, Alaric (Matt Davis) and Georgie (guest star Allison Scagliotti) stumble upon a mysterious symbol that may be related to the supernatural force controlling Damon and Enzo. Finally, Caroline gets an unexpected surprise from Stefan.
As Enzo (Michael Malarkey) continues to fight the control over him, Bonnie (Kat Graham) finds herself at the center of a deadly game and forced to make a heart wrenching decision involving two of the most important people in her life. At the Armory, Alaric (Matt Davis) researches a mysterious artifact that he hopes will help in their fight to get Damon (Ian Somerhalder) and Enzo back. Finally, Damon’s downward spiral leads him to Tyler Lockwood (guest star Michael Trevino) who attempts to talk some sense into him before it’s too late. Paul Wesley and Candice King also star.
Tasked with finding a mysterious artifact, Damon’s (Ian Somerhalder) latest mission takes him to Texas where a violent run-in with Peter Maxwell (guest star Joel Gretsch) leads to a surprising revelation. Meanwhile, after gaining the upper hand in their fight to save Damon and Enzo (Michael Malarkey), Stefan (Paul Wesley) and Alaric (Matt Davis) team up and uncover the origins of the mysterious force they’re up against. Finally, Matt (Zach Roerig) returns to the fray after his past and present collide in an unexpected way. Candice King also stars.
Spiraling down a dangerous path of self-destruction, Damon’s (Ian Somerhalder) latest actions prove he may be beyond the point of return. Unwilling to give up on his brother, Stefan (Paul Wesley) is forced to make a gut-wrenching decision that threatens to change their relationship forever. Elsewhere, Bonnie (Kat Graham) gets advice from Caroline (Candice King) on how to break through to Enzo (Michael Malarkey), while Matt (Zach Roerig) attempts to decipher a mysterious box of messages that he’s received. Finally, after tragedy strikes close to home, Stefan and the others are forced to remember what matters most to them.
When her children become the focus of the Siren’s latest plan, Caroline (Candice King) takes drastic measures to ensure nothing gets in the way of keeping her family safe. In a race against the clock, Stefan (Paul Wesley) pledges to do everything he can to save the twins, while tensions between Alaric (Matt Davis) and Caroline boil over, leading them to face some harsh realities about the future of their family. Meanwhile, when Enzo (Michael Malarkey) finds himself unable to fight off Sybil’s (guest star Nathalie Kelley) latest move, Stefan dives into his subconscious and along the way, sets off a chain of events that leaves him faced with a life-changing decision.
Faced with the fallout from his interaction with Cade (guest star Wole Parks), Stefan (Paul Wesley) is determined to have one thing go right – Christmas Eve with Caroline. However, when Damon (Ian Somerhalder) and Sybil (guest star Nathalie Kelley) crash their Christmas Eve dinner, which had been joined by Alaric (Matt Davis), Matt (Zach Roerig) and Peter (guest star Joel Gretsch), things quickly take a dark and twisted turn. Meanwhile, in a series of flashbacks to Stefan’s past, Cade’s attempt to entice him with his mysterious agenda leaves Stefan faced with an unimaginable decision. Kat Graham and Michael Malarkey also star.
Stefan (Paul Wesley) and Damon (Ian Somerhalder) attend an anger management support group looking for their next victim. Sybil (guest star Nathalie Kelley) is still alive and teaching a group of high school students who she’ll later use as leverage to get Caroline (Candice King) to locate a historical artifact that can be used against her. Meanwhile, Stefan and Damon continue their commitment to Cade as they test the morals of a young doctor, Tara (guest star Alexandra Chando). Zach Roerig also stars.
Stefan (Paul Wesley) and Damon (Ian Somerhalder) return to Mystic Falls at Sybil’s (guest star Nathalie Kelley) request as she is still in search of the historical artifact. Bonnie (Kat Graham) returns from Paris wearing a vile of Enzo’s (Michael Malarkey) blood making Caroline (Candice King), wonder if she will become a vampire. Stefan, Damon, Caroline, Bonnie and Enzo all attend the Miss Mystic Falls pageant where Sybil continues to taunt Damon with memories of Elena.
Sybil (guest star Nathalie Kelley) enacts revenge on Damon (Ian Somerhalder) by putting him in a catatonic state. Caroline (Candice King) and Bonnie (Kat Graham) enter Damon’s mind and run into familiar faces from the past, only to discover Stefan (Paul Wesley) is the key to Damon’s fate. It’s a race against time for the bell as both Sybil and her sister Seline (Kristen Gutoskie) jockey for its control. Zach Roerig also stars.
Cade (guest star Wolé Parks) returns to Mystic Falls and presents Damon (Ian Somerhalder) and Stefan (Paul Wesley) with additional assignments, each with unthinkable consequences. Even with tension growing in their friendship, Caroline (Candice King) and Matt (Zach Roerig) do their best to protect the town’s residents from Cade’s appetite for their souls. Bonnie (Kat Graham) and Enzo (Michael Malarkey) hit the road on a romantic trip, taking the bell with them in hopes to keep it safe.
In order to save Stefan’s (Paul Wesley) soul, Damon (Ian Somerhalder) makes a deal with Cade (guest star Wolé Parks) to retrieve the Maxwell journal. Alaric (Matt Davis) and Matt (Zach Roerig) refuse to hand the journal over as it may contain the key to destroying Cade. Caroline (Candice King) desperately tries to connect with Stefan before Cade goes through with his plan.
Damon (Ian Somerhalder) and Alaric (Matt Davis) come face to face with an old enemy after they obtain a weapon that may be able to destroy Cade. Stefan (Paul Wesley) is held captive by a surprising acquaintance and is forced to confront a dark secret from his past. Meanwhile, Caroline (Candice King) and Matt (Zach Roerig) try to keep Stefan’s violent history from destroying him. Cade (guest star Wolé Parks) focuses his attention on Bonnie (Kat Graham) and digs deep into her mind.
Damon (Ian Somerhalder) and Stefan (Paul Wesley) must join forces against Cade (guest star Wolé Parks) in order to save Elena’s casket. Meanwhile, Caroline (Candice King) and Alaric (Matt Davis) deal with their daughters’ burgeoning magical powers.
A wedding is quickly planned in order for Damon (Ian Somerhalder) and Stefan (Paul Wesley) to lure a dangerous enemy out into the open. This looming threat puts the fate of Mystic Falls in eminent danger and must be destroyed.
When an impulsive decision by Damon threatens to unravel a carefully negotiated deal between Stefan and Lily (recurring guest star ANNIE WERSCHING), he has no choice but to make amends with his mother before things spiral further out of control. However, Lily remains one step ahead and carries out a harsh plan that hits Damon where it hurts most. Elsewhere, after returning to Whitmore Collage, Alaric turns to Bonnie for help with a mysterious and potentially dangerous artifact he has obtained, while Matt is forced into making a risky life or death decision. Meanwhile, Caroline, who finds herself a pawn in Lily and the heretics’ plan for retribution, uncovers a shocking detail about Stefan’s past.
In the aftermath of a clever plan orchestrated by Lily (recurring guest star ANNIE WERSCHING), Damon sets off on a road trip with Bonnie and Alaric in search of leverage they can use against his mother. Meanwhile, Caroline, who is being held hostage by the Heretics, learns some shocking information about Valerie’s (recurring guest star ELIZABETH BLACKMORE) past, while Stefan learns a few unexpected details about his own past from Lily. Finally, Alaric turns to Bonnie for her help after coming clean about a secret he’s been keeping.
Just as Damon thinks he’s gained the upper hand in his fight against Lily (recurring guest star ANNIE WERSCHING), an unexpected turn of events leaves him scrambling for a “plan B.” Elsewhere, when the fallout of Damon’s actions gains the unwanted attention of Mary Louise (recurring guest star TERESSA LIANE) and Nora (recurring guest star SCARLETT BYRNE), Stefan and Caroline are forced to spend the night distracting the girls at Whitmore College’s Heaven & Hell ball. Finally, after suspecting that she’s up to something, Enzo sets off on a mission to find out what Valerie (recurring guest star ELIZABETH BLACKMORE) is hiding, while a plan set by Alaric and Bonnie leaves their worlds turned upside down.
After realizing the downward spiral he was on, Damon decides he’s going to turn over a new leaf and that his actions moving forward will do right by Elena. Lily (recurring guest star ANNIE WERSCHING) prepares for the arrival of a special figure from her past, while Enzo stands by not sure what to expect. Elsewhere, at Caroline’s urging, Stefan comes face-to-face with Valerie (ELIZABETH BLACKMORE) and learns some upsetting details about her past, while Enzo and Bonnie find themselves at odds when they’re forced to fend off a violent threat. Finally, when Bonnie learns some disturbing information involving the Phoenix stone, she is forced to confront Alaric.
After being reunited with her former love Julian (guest star TODD LASANCE), Lily (recurring guest star ANNIE WERSCHING) hosts a dinner party to introduce him to Damon and Stefan and to declare peace between her family of Heretics and the residents of Mystic Falls. Damon and Stefan find themselves at an impasse when they realize they have differing views on how to handle Julian’s arrival. At the party, Bonnie and Matt uncover a strange mystery involving some unsuspecting residents, while a devastating revelation causes Alaric to reach his breaking point.
In order to get through to Lily (recurring guest star ANNIE WERSCHING) about Julian’s (recurring guest star TODD LASANCE) manipulating ways, Stefan and Damon confront their mother with painful memories from their childhood. However, when Lily reveals a dark secret she’s been harboring for over 160 years, Stefan and Damon are left questioning everything they’ve ever known about their family. Determined to prove himself to Lily, Enzo comes face to face with Julian and challenges him to a duel, but an unexpected twist threatens to complicate things. Elsewhere, Matt finds himself in the middle of a deepening mystery involving the residents of Mystic Falls, and Caroline’s world is turned upside down when Valerie (recurring guest star ELIZABETH BLACKMORE) reveals some life-changing news to her.
As Julian (recurring guest star TODD LASANCE) and Lily (recurring guest star ANNIE WERSCHING) throw a party to celebrate Mary Louise (recurring guest star TERESSA LIANE) and Nora’s (recurring guest star SCARLETT BYRNE) anniversary, Stefan and Damon set in motion a risky plan to eliminate a new threat posed by Julian. Meanwhile, following a major revelation uncovered by Valerie (recurring guest star ELIZABETH BLACKMORE), Caroline is forced to face her new reality, even as it threatens to destroy her relationship with Stefan. Finally, determined to do what’s best for her family, Lily makes the most difficult decision of her life.
With the holidays in full swing, a search for Julian leads Damon and Stefan to a small town outside of Mystic Falls. While managing a holiday toy drive at Whitmore College, Bonnie seeks help from Nora (recurring guest star SCARLETT BYRNE) and the two strike up an unlikely friendship. Elsewhere, Caroline does her best to navigate her new life as a pregnant vampire, while Alaric grows concerned that the pregnancy is affecting her more than she’s letting on. Finally, after finding himself at odds with Damon, Stefan is forced to take matters into his own hands, setting off a tragic chain of events that leaves their lives changed forever.
After finding himself on the wrong end of Julian’s (recurring guest star TODD LASANCE) plan to avenge Lily’s (recurring guest star ANNIE WERSCHING) death, Damon awakens to find himself trapped inside the Phoenix stone. There, Damon is tormented by a traumatic experience from his time in the Civil War and forced to face his darkest demon in order to get out. On the outside, Bonnie is in a race against the clock to get Damon out before the effects of the Phoenix stone take over and leave him changed forever.
With the traumatic effects of the Phoenix stone taking a toll on his brother, Stefan attempts to help Damon regain his grip on reality, while secretly struggling with his own experience in the stone. Elsewhere, Matt and Bonnie deal with the fallout after Julian (recurring guest star TODD LASANCE) and his men take over Mystic Falls, leading Matt to spiral out of control and into trouble with an officer named Penny (recurring guest star ANA NOGUEIRA). Meanwhile, Tyler (guest star MICHAEL TREVINO) returns to town for Alaric’s baby shower and Caroline makes an upsetting discovery involving Alaric and his future plan for the babies.
When his experience in the Phoenix stone leads him to do the unthinkable, Damon finds himself without a care in the world, spiraling out of control and under the influence of a dangerous and reckless Julian (recurring guest star TODD LASANCE). Refusing to give up on his brother, Stefan attempts to reason with Damon, only to uncover the devastating reason for his descent. Elsewhere, Caroline begins having some dangerous side effects as a result of her supernatural pregnancy and is forced to turn to Valerie (recurring guest star ELIZABETH BLACKMORE) for help. Meanwhile, Bonnie, Nora (recurring guest star SCARLETT BYRNE) and Mary Louise (recurring guest star TERESSA LIANE) attempt to track down a ruthless vampire hunter named Rayna (recurring guest star LESLIE-ANNE HUFF) after they suspect that she has reemerged.
When complications from her supernatural pregnancy leave Caroline’s life hanging in the balance, Stefan and Valerie (recurring guest star ELIZABETH BLACKMORE) take extreme measures to try and save her and the babies. Meanwhile, after uncovering a dark secret about Damon, Enzo uses the information to force Damon into helping him track down Rayna Cruz (recurring guest star LESLIE-ANNE HUFF), a ruthless vampire hunter who is on the loose. However, when Damon’s actions inadvertently put everyone he loves in Rayna’s path, he is forced to make things right before it’s too late.
In order to lure a vengeful vampire hunter named Rayna Cruz (recurring guest star LESLIE-ANNE HUFF) away from his friends in Mystic Falls, Stefan heads to New Orleans, where Valerie (recurring guest star ELIZABETH BLACKMORE) has learned of a safe house that can protect him. Once there, he comes face to face with Klaus Mikaelson (guest star/former series star JOSEPH MORGAN – The Originals), who soon becomes suspicious of his old friend’s unexpected arrival in his city. Meanwhile, Enzo, who is working on behalf of a mysterious organization called The Armory, approaches Damon and Bonnie with a plan that could protect Stefan from Rayna. Finally, after learning that Alaric has decided to leave for Dallas with the twins immediately, Caroline offers to accompany them on the trip and finds herself contemplating her own future in Mystic Falls.
While Stefan and Valerie (recurring guest star ELIZABETH BLACKMORE) search for a magical herb that can keep him hidden from Rayna (recurring guest star LESLIE-ANNE HUFF), Damon comes up with his own plan to take her down for good. However, while at The Armory, Bonnie makes a shocking discovery about Rayna that brings Damon’s plan to a screeching halt. Elsewhere, a conversation with Caroline leaves Stefan questioning their future together, while Matt decides it may be time to truly take a stand against the vampires of Mystic Falls. Damon’s desire to take himself out of the game ramps up as he races to complete unfinished business with Stefan and Bonnie.
In an attempt to make things right with his brother, Damon offers to have Stefan’s scar magically transferred to him, only to discover that doing so may come with some unexpected consequences. With time running out and Rayna (recurring guest star LESLIE-ANNE HUFF) closing in on Stefan, Valerie (recurring guest star ELIZABETH BLACKMORE) desperately attempts to reason with Damon before it’s too late. Elsewhere, after being framed for breaking Rayna out of the Armory, Enzo attempts to clear his name, but not before a violent run-in with Nora (recurring guest star SCARLETT BYRNE) forces him to make an upsetting discovery.
In the aftermath of his brother’s fateful decision, Stefan awakens to find himself thrown into a life or death situation with only his basic instincts to rely on. With time working against him, he sets off on a journey of survival while forced to confront a lifetime of irreversible damage Damon has done to their relationship. Meanwhile, desperate to save his brother, Damon follows an unusual lead he has come across, while Matt sends Valerie (recurring guest star ELIZABETH BLACKMORE) to Dallas to enlist Alaric’s help in the search for Stefan. Finally, when Rayna (recurring guest star LESLIE-ANNE HUFF) discovers the emergence of a new threat, she sets off on her own mission to find Stefan before the others do.
Determined to capture an escaped vampire named Ambrose, who may be the key to getting Stefan back safely, Damon heads to Memphis with Alaric in tow. However, reluctant to step back into his former vampire-hunting ways, Alaric makes his unwillingness to participate clear, while revealing the truth about the past three years of his life without Damon. Meanwhile, in the psych ward, Bonnie meets a young woman named Virginia (guest star AISHA DURAN), who provides her with some valuable information about why The Armory may be after her. Finally, Enzo takes matters into his own hands when he learns some devastating news from Rayna (recurring guest star LESLIE-ANNE HUFF).
When Enzo’s efforts to protect Bonnie end up putting her life in jeopardy, it is learned that Rayna (recurring guest star LESLIE ANNE-HUFF) may hold the key to her survival. With time running out and Rayna at the reins, Enzo and Bonnie reluctantly team up with Damon, who is desperate to save Bonnie’s life and to repair their broken friendship. Elsewhere, when Stefan travels to Dallas and comes face to face with Alaric, tensions escalate and they are forced to confront the fallout from Stefan’s absence in Caroline’s life. Finally, Enzo learns The Armory’s true motives behind their search for Bonnie.
With Bonnie’s life at stake and an uphill battle ahead of them, Damon and Enzo lead the charge to save Bonnie before her condition worsens. Stefan reluctantly teams up with Matt for the sake of Bonnie and uncovers the truth behind Matt’s anger towards him. Elsewhere, determined to help her best friend, Caroline joins Alaric on a mission and quickly realizes how much she’s missed her former supernatural lifestyle. Finally, after their plan takes an unexpected turn, Damon makes a fateful decision that will forever change his relationship with Bonnie.
When Damon’s risky attempt to save Bonnie takes an unexpected turn, the consequences of his actions forces everyone to band together to help her pull through. Meanwhile, when a new threat leaves Caroline’s life in jeopardy, Stefan makes a rash decision that ultimately forces them to face the fallout from their relationship. Elsewhere, Enzo tries to hold it together as he painfully watches Bonnie in the fight of her life, while Matt takes matters into his own hands to save one of his closest friends.
In the season finale, despite their best efforts to help Bonnie through the harrowing predicament she now faces, Damon, Enzo and Caroline realize their options are running out and drastic measures need to be taken. With their only chance of saving their friend lying inside the Armory, Stefan breaks the news to Caroline that they may need help from an unlikely source: her and Alaric’s twin daughters. Elsewhere, Enzo keeps Bonnie preoccupied by bringing her back to their cabin, but when his plan takes an unexpected turn, it’ll be up to Damon to make the ultimate sacrifice to save his closest friends.
Knowing she needs to come to terms with the loss of Damon, Elena turns to Alaric to help her move on with her life. Enzo convinces Caroline to join him as he tracks down a lead to get Damon and Bonnie back, but Caroline is shocked when they make an unexpected detour and uncover what Stefan has been up to. Meanwhile, Matt worries about Jeremy who is spending time with Sarah (recurring guest star GABRIELLE WALSH – Paranormal Activity: The Marked Ones), a mysterious girl who has recently arrived in Mystic Falls. Elsewhere, Tripp (recurring guest star COLIN FERGUSON – Eureka), leader of the community protection program, makes an interesting confession to Matt about his connection to the town. Lastly, with the Other Side destroyed and gone for good, Damon and Bonnie reluctantly band together to uncover the mystery of where they are and how they are going to get back home.
In an attempt to bring some fun back into their lives, Elena persuades Caroline to meet her at the swimming hole where she plans to introduce her to Liam (recurring guest star MARCO JAMES – The Client List). Tyler, still working on controlling his anger issues, asks Liv (recurring guest star PENELOPE MITCHELL – Hemlock Grove) for a favor and is surprised when she makes an unexpected confession. Stefan arrives back in Mystic Falls looking for Enzo and is caught off guard when he notices a strange change in Elena. Meanwhile, at the lake, Enzo’s actions cause Matt to make a startling revelation, and Jeremy makes a discovery about the anti-magic spell that could potentially put Elena’s life in danger. Elsewhere, Damon and Bonnie stumble upon clues that lead them to believe they’re not alone.
When Damon and Bonnie realize that uncovering a time in Damon’s past may provide clues to finding their way home, Damon is forced to relive one of the worst days of his life. After an awkward run-in with Jo (recurring guest star JODI LYN O’KEEFE) at the hospital, Alaric steps in to help Jeremy get his life together and cope with the loss of Bonnie. Elsewhere, Stefan attempts to show Elena what it’s like to start over and create a new identity, while an unsuspecting Matt finds himself in a disturbing situation when Tripp (recurring guest star COLIN FERGUSON) lets him in on a dark secret. Lastly, Stefan, who is desperate to regain some normalcy in his life, is stunned when an unexpected visitor shows up.
With Homecoming around the corner, Elena invites Liam (recurring guest star MARCO JAMES) to attend a party at the corn maze with her. Instead of attending the homecoming festivities, Caroline is preoccupied after Stefan shows up unexpectedly and needs her help cleaning up a mess created by Enzo. Heeding Elena’s advice to be more social, Alaric reluctantly attends the party, but a devastating accident quickly leaves him and Jo (recurring guest star JODI LYN O’KEEFE) rushing to save lives. Elsewhere, Tyler finds himself in a dangerous position when his werewolf curse is put to the test, and an emotionally embattled Stefan comes clean to Caroline about his intent to move on from Mystic Falls. Lastly, Damon and Bonnie make an important discovery that affects their quest to get back home.
When Alaric realizes that Jo (recurring guest star JODI LYN O’KEEFE) can’t be compelled, he asks Elena to do some digging into her background. After learning that Enzo has been captured by Tripp (recurring guest star COLIN FERGUSON), Caroline teams up with Matt and Stefan to rescue him before Tripp learns their true identities. Armed with some new information about her past, Sarah (recurring guest star GABRIELLE WALSH) breaks into Tripp’s office and is surprised when she finds Matt there, doing some investigating of his own. Meanwhile, Elena is forced to deal with the consequences of her actions, and Jeremy hits rock bottom, lashing out in a destructive way. Lastly, Damon is determined to take matters into his own hands when he receives some upsetting news.
When the past comes back to haunt her, Elena is forced to face her problems head on. After a night out at the annual Whitmore Medical Center Fundraiser, Jo (recurring guest star JODI LYN O’KEEFE) opens up to Alaric about her own tragic past. Meanwhile, Stefan, Matt and Enzo resort to extreme measures when Tripp (recurring guest star COLIN FERGUSON) withholds information about his vampire-killing operation, and when Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) gets caught in the middle of a dangerous plan, Caroline is in a race against the clock. Elsewhere, Tyler and Liv (recurring guest star PENELOPE MITCHELL) grow closer, and Damon stumbles upon a startling clue that renews his hope.
As Caroline and Elena prepare to host “Friendsgiving” at the dorm, they receive some hopeful news from Alaric and Stefan, who have traveled to Portland to gather some information regarding the Gemini Coven. Tyler is determined to help Liv (recurring guest star PENELOPE MITCHELL) after she and Luke (recurring guest star CHRIS BROCHU) reveal some disturbing information about their witch lineage and the impending plans their coven has for them. Meanwhile, dinner takes a drastic turn when Jo (recurring guest star JODI LYN O’KEEFE), who has revealed some painful details about her past, finds herself fighting for her life, leaving Alaric scrambling to help from a distance. Finally, Kai (recurring guest star CHRIS WOOD – The Carrie Diaries) makes a dangerous discovery that brings him one step closer to his release.
Damon finds himself in hot water after he carries out a plan that requires Alaric’s unwilling participation. When Elena shares some hopeful news with Jeremy about Bonnie, she is caught off guard by his reaction. Liv (recurring guest star PENELOPE MITCHELL) helps Damon and Elena with their plan to get Bonnie back, but when things take an unexpected turn, she’s left with a difficult choice to make. Elsewhere, Matt takes matters into his own hands when Enzo’s actions cross the line, and Kai’s (recurring guest star CHRIS WOOD) existence continues to be a dangerous threat.
With the holidays approaching, Bonnie attempts to replicate her favorite traditions, while reminiscing about happier times with her friends. Not able to return home to Mystic Falls for her favorite time of the year, Caroline is surprised when Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) brings the holidays to her at Whitmore College. Meanwhile, after discovering that Jo (recurring guest star JODI LYN O’KEEFE) has gone missing, Alaric turns to Damon and Elena for help, while Liv (recurring guest star PENELOPE MITCHELL) and Luke (recurring guest star CHRIS BROCHU) find themselves at odds when Tyler approaches them with a risky plan. Elsewhere, Jeremy helps Matt carry out a plan to take down Enzo, but grows concerned when Matt takes things too far. Lastly, Stefan is forced to break some devastating news to Caroline.
More powerful than ever, Kai (recurring guest star CHRIS WOOD) holds Elena captive while he learns to control his newly acquired magic. At the Salvatore mansion, Liv (recurring guest star PENELOPE MITCHELL) and Alaric try to prepare Jo (recurring guest star JODI LYN O’KEEFE) for the impending merge ceremony with Kai, but they quickly realize Jo is weaker than they thought. After bringing Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) home from the hospital, Caroline travels with Stefan to North Carolina in search of a cure for her mother’s cancer. Meanwhile, Stefan, who has his own intentions for traveling to North Carolina, is caught off-guard when Enzo shows up demanding to know what Stefan is hiding. Lastly, when Damon discovers Elena has been kidnapped by Kai, he is forced to rethink his strategy after an unexpected visitor throws a wrench into his plan.
When Liv (recurring guest star PENELOPE MITCHELL) and Luke’s (recurring guest star CHRIS BROCHU) father arrives to town to celebrate their birthday, they try and convince him to let Jo (guest star JODI LYN O’KEEFE) and Kai (recurring guest star CHRIS WOOD) take their place in the merge ceremony. After Tyler finds out that the merge is happening sooner than he expected, he urges Liv to let him talk to her father. Meanwhile, after Caroline’s plan to cure her mother takes an unexpected and devastating turn, Elena, Stefan and Damon gather at the hospital, while Jo attempts to save Sheriff Forbes’ (recurring guest star MARGUERITE MacINTYRE) life. Lastly, with the merge set to take place, Damon’s risky plan quickly sends things spiraling out of control, forcing one of the twins to take matters into their own hands.
Determined to celebrate Bonnie’s birthday, Elena convinces Jeremy that it’s what Bonnie would have wanted. After piecing the broken ascendant back together, Elena, Jeremy and Damon attempt to send Bonnie a message, but the situation turns dire when they make an unsettling discovery. Meanwhile, after uncovering Stefan’s secret about his great-niece Sarah Salvatore (recurring guest star TRISTIN MAYS), Enzo enlists a reluctant Matt to help interfere with her life. Elsewhere, Stefan keeps a close eye on Caroline as she unconventionally attempts to cope with everything going on around her. Lastly, realizing it might be time to move on with his life, Jeremy contemplates leaving Mystic Falls for good.
It’s Jeremy’s last day in Mystic Falls and Elena puts on a brave face as they reminisce about their past. Stefan and Caroline find themselves growing closer as they prepare Caroline’s family cabin for her mother to live out her final days. While packing up her office, Sheriff Forbes (recurring guest star MARGUERITE MacINYTRE) turns to Damon for help solving one of her remaining open cases involving Elena’s parents. Elsewhere, when a violent confrontation with Enzo leaves Jeremy wondering whether he should leave or not, Matt finds his own life on the line after Enzo lures him and Sarah Salvatore (recurring guest star TRISTIN MAYS) into his dangerous plan. Lastly, Caroline rushes to the hospital after learning her mother has taken a turn for the worse.
After assigning tasks to each of her friends, Caroline attempts to deal with her current situation as reality begins to set in around her. Elena spends a day with Caroline and grows concerned when she starts noticing a strange change in Caroline’s behavior. Meanwhile, Alaric becomes wary when Kai (recurring guest star CHRIS WOOD), who has begun experiencing unexpected consequences from the merge, turns to Jo (recurring guest star JODI LYN O’KEEFE), desperate for her help. Elsewhere, while Bonnie finds herself in an unfamiliar situation, Matt and Tyler contemplate a major life change. And when Damon offers Caroline advice on how to cope with everything going on around her, it forces him to revisit painful memories involving his own mother.
After shutting off her humanity following the death of her mother, Caroline gives her friends an unexpected ultimatum. Not knowing how to handle the new Caroline, Stefan’s attempt to intervene sets off a dangerous chain of events, leaving him and Elena in a race against the clock. Meanwhile, after seeking answers from Kai (recurring guest star CHRIS WOOD) about the prison world, Damon’s world is turned upside when he learns some devastating news about his mother, Lily (recurring guest star ANNIE WERSCHING – 24). Elsewhere, Enzo finds himself becoming increasingly intrigued by Sarah Salvatore (recurring guest star TRISTAN MAYS), and Bonnie begins to struggle with the effects of being back in the real world.
With the help of Bonnie and Kai (recurring guest star CHRIS WOOD), Damon and Elena set forth a plan to rescue Damon’s mother, Lily (recurring guest star ANNIE WERSCHING), who is trapped in the 1903 prison world. Meanwhile, when Caroline’s plan for Stefan backfires, she is left to pick up the pieces. Elsewhere, back at Whitmore College, Enzo and Alaric’s attempt to reel Caroline back in doesn’t quite go as planned when they realize they’re outmaneuvered. Lastly, an unexpected gift from Bonnie leaves Damon shaken to his core.
With their humanity turned off, Stefan and Caroline begin wreaking havoc at Whitmore, leaving Damon to come up with a risky plan involving Lily (recurring guest star ANNIE WERSCHING). After rushing to help Jo (recurring guest star JODI LYN O’KEEFE) treat victims of Stefan and Caroline’s latest killing spree, Elena discovers Jo is pregnant, prompting her to reevaluate her own life as a vampire. Meanwhile, when Sarah (recurring guest star TRISTAN MAYS) boldly turns the tables on an unsuspecting Enzo, he is forced to open up about his tragic past. Lastly, at Scull Bar, a twisted round of karaoke leaves Tyler and Matt in a dangerous situation.
Wrestling with whether or not to tell Elena about the cure, Damon brings up their future together and what life would be like if they weren’t vampires. Meanwhile, it’s all hands on deck when attempts to stop a humanity-free Caroline don’t go as planned. Elsewhere, when Bonnie discovers that Damon has betrayed her trust, she takes matters into her own hands, setting off a chain of events that leaves Damon dealing with the fallout. Lastly, after being forced to face his traumatic past, Enzo sets out for answers and is surprised when he learns the truth about the day he was turned into a vampire.
As Alaric and Jo (recurring guest star JODI LYN O’KEEFE) reluctantly participate in their bachelor and bachelorette parties, Damon and Elena discuss the ramifications from an impulsive offer that Damon makes. Unsure of what to do, Elena turns to Bonnie and Jo for advice, but is left conflicted when Bonnie raises some unanticipated concerns. When Enzo realizes Lily (recurring guest star ANNIE WERSCHING) is on a dangerous downward spiral, he asks Stefan to help intervene before it’s too late. Lastly, fed up with the supernatural threats that plague their town, Matt takes his frustrations out on Tyler, while Alaric considers a life-changing piece of advice.
It’s Alaric and Jo’s (recurring guest star JODI LYN O’KEEFE) wedding day and Elena and Bonnie do their best to help a stressed-out Jo with the last-minute preparations. After uncovering some life-changing news that Damon has been keeping from him, Stefan takes his brother on a road trip to give him some perspective on his future with Elena. Elsewhere, when Caroline returns to Mystic Falls after dealing with the fallout of her humanity-free rampage, she begins making amends with her friends and comes to a realization about her and Stefan’s prospects of being together. Finally, when Bonnie begins having vivid nightmares that Lily (recurring guest star ANNIE WERSCHING) is coming after her, she enlists Matt’s help in taking Lily down.
In the aftermath of Alaric and Jo’s (recurring guest star JODI LYN O’KEEFE) powerful nuptials, things take a dramatic turn when an uninvited guest shows up, leaving Elena in terrible jeopardy. Despite Matt’s advice to leave town to protect herself, a defiant Bonnie takes matters into her own hands after finding herself on the receiving end of a twisted plan. As Stefan and Caroline reach an emotional crossroads in their relationship, a reunion with Liv (recurring guest star PENELOPE MITCHELL) leaves Tyler faced with a decision that could change his life forever. Meanwhile, Lily’s (recurring guest star ANNIE WERSCHING) reckless actions cause Stefan to realize the lengths to which his mother will go to reunite with her “family.” Finally, after a devastating chain of events, Damon is forced to make the most difficult decision of his life.
Without telling Elena that Stefan is missing, Damon turns to Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) for help finding his brother. Elena and Caroline try to find out who is covering up a campus murder, and a fellow Whitmore student named Jesse (recurring guest star KENDRICK SAMPSON -- Greek) gives Elena some intriguing information about Professor Wes Maxfield (recurring guest star RICK COSNETT -- The New Inventors). While Jeremy struggles to return to his old life, he continues to be the only person who can see and talk to Bonnie, but he can't convince her that the time has come to let the others know she sacrificed her own life for his. After learning that Silas is searching for Katherine, Damon asks Matt and Jeremy to keep her out of sight, but the situation quickly spirals out of control. Finally, Nadia (recurring guest star OLGA FONDA) uses violence to make a point about her own agenda.
When Elena and Katherine have the same dream that Stefan is in danger and desperately needs their help, they convince Damon to help them find Stefan. However, their plans are thwarted by a mysterious young woman named Tessa (recurring guest star JANINA GAVANKAR -- True Blood) who seems to know everything about Stefan's history. In flashbacks to a distant time and place, Tessa reveals the shocking secrets in her past and what she has planned for the future. She also has a disturbing message for Damon about his own future. Silas forces an unwilling accomplice to help him search for Katherine, leading to a confusing and life-threatening situation for Matt. Finally, Silas reveals the reason he's determined to find Katherine, and Damon and Elena face a disturbing new reality.
While Mystic Falls observes its traditional Remembrance Day to honor the dead, Damon and Elena try to help Stefan through a confusing time, a task that ends up taking Elena on an emotional journey of her own. A worried Matt tries to figure out the reason behind his mysterious blackouts, and Caroline makes an effort to get to know Jesse (recurring guest star KENDRICK SAMPSON) better. Meanwhile, Jeremy makes a startling confession that hits Damon hard, and Dr. Maxfield (recurring guest star RICK COSNETT) puts a plan in motion that will change everything.
On campus, Elena is touched by a sad and secretive student named Aaron (recurring guest star SHAUN SIPOS -- Melrose Place, Final Destination 2). Elena and Damon attend the Whitmore Historical Ball dressed as Anne Boleyn and Henry VIII. At the ball, Elena shares a dance with Dr. Maxfield (recurring guest star RICK COSNETT), who has a disturbing message for her. Caroline's evening at the ball takes her from happiness to heartbreak. Meanwhile, Nadia (recurring guest star OLGA FONDA) reveals her surprising history to Katherine, and Damon tries to make a deal with Silas. But when Silas demands that Damon commit an unthinkable act, it leads to a violent confrontation.
Silas happily announces his new goal to Damon and Elena, but they are skeptical when he promises to accomplish one important task in return for their help. Tessa (recurring guest star JANINA GAVANKAR) confidently tells Stefan about her next move, then realizes that Silas has managed to outsmart her. A desperate Katherine discovers a new and unexpected consequence of becoming human again, and realizes she needs a new place to stay. In exchange for a spot in the dorm room, she offers to show Caroline how to get answers from Dr. Maxfield (recurring guest star RICK COSNETT). Bonnie is touched by Jeremy's strength and determination to stand by her. Finally, Damon is stunned when he figures out the secret to Tessa's plan.
The power of doppelgangers.... While Elena and Damon try to explain Amara's (played by series star NINA DOBREV) situation to Stefan, Dr. Wes Maxfield (recurring guest star RICK COSNETT) gives Katherine some deeply disturbing news. Nadia (recurring guest star OLGA FONDA) shows up at Caroline's dorm room searching for Katherine. After a surprising conversation with Amara, Jeremy and Bonnie share a glimmer of hope. Silas fails to keep a promise, causing Damon to turn to Tessa (recurring guest star JANINA GAVANKAR) for help with his new plan, and Stefan makes a heartbreaking confession to Damon and Elena.
At Whitmore College, Elena and Caroline decide it's time to throw a big party, but their plans are interrupted when Jesse (recurring guest star KENDRICK SAMPSON) suddenly needs Caroline's help. At Elena's request, Damon comes up with an effective method to get Wes (recurring guest star RICK COSNETT) to answer his questions. At the party, Elena finds that she and Aaron (recurring guest star SEAN SIPOS) have a lot in common, and Caroline grows more concerned about Jesse. Meanwhile, Katherine does a favor for Matt and manages to get through to Stefan, who is still struggling to overcome the events of the summer. Finally, Bonnie does her best to cope with her new reality, and Damon makes a terrifying discovery about a secret society.
Stefan continues to offer Katherine his support while trying to mask his own pain, until Caroline shows up with an unusual form of therapy. After trying to make amends with Caroline, Elena grows so concerned about Damon that she turns to Aaron (recurring guest star SHAUN SIPOS) for help. Later, when Damon tells Elena about a terrible ordeal in his past that he has kept secret for decades, she shares the disturbing information she just learned about her own family. Finally, Aaron decides on a desperate course of action after a conversation with Dr. Wes (recurring guest star RICK COSNETT).
Damon realizes Elena is in danger and enlists Stefan's help to find her. The brothers pay a visit to Aaron (recurring guest star SHAUN SIPOS), and Damon shocks Stefan by revealing his first-hand knowledge of Aaron's family. In an attempt to stop Damon, Dr. Wes (recurring guest star RICK COSNETT) unleashes his secret weapon, forcing Damon to deal with a part of his past he thought was gone forever, as well as the consequences of his decades-long plan for revenge. Meanwhile, Elena is horrified by Dr. Wes' confessions about the dark history of Whitmore College and his own ultimate goal. Finally, a frantic Katherine turns to Matt for help, until she realizes that Nadia (recurring guest star OLGA FONDA) may be the one who can solve her problem.
As she faces a new crisis, Katherine remembers the traumatic night in 1490 when she gave birth to the daughter who was immediately taken from her. Stefan lets Elena, Caroline and Bonnie know that Katherine's health has taken a turn for the worse, while Damon, Matt and Jeremy discuss some of Katherine's most notorious moments. Nadia (recurring guest star OLGA FONDA) comes up with a frightening plan to protect her mother, and Stefan and Elena are forced to help her. Meanwhile, Caroline is mortified when she realizes she forgot to fill Elena in on the latest shocking gossip, then indulges in a little scandalous behavior of her own. Finally, Elena and Katherine share an unexpected moment of connection.
When Enzo (recurring guest star MICHAEL MALARKEY) brings Damon a gruesome present and insists that they bond by committing an act of revenge, Damon makes an effort to do the honorable thing. After finding himself in awkward and confusing conversations with Nadia (recurring guest star OLGA FONDA), Matt impulsively decides to throw a party, where Caroline makes a stunning confession to Elena, then has to face the consequence of her actions with Stefan and Tyler. Aaron (recurring guest star SHAUN SIPOS) does his best to make amends for his family's past misdeeds and start a new life for himself. Finally, Elena suddenly finds herself in a life-threatening situation with only minutes to figure out how to save herself.
Hoping to help everyone move past recent traumatic events, Caroline convinces Elena and Bonnie to attend Whitmore College's "Bitter Ball" for broken-hearted students. Bonnie is intrigued with a fellow student named Liv (recurring guest star PENELOPE MITCHELL -- Hemlock Grove), who appears to be dabbling in witchcraft. Tyler starts to worry about Matt's relationship with Nadia (recurring guest star OLGA FONDA). After making a disturbing discovery, Stefan has a frustrating conversation with Damon and Enzo (recurring guest star MICHAEL MALARKEY). Dr. Wes (recurring guest star RICK COSNETT) struggles to continue his research project with help from a new benefactor named Sloan (recurring guest star CAITLIN McHUGH). Still bent on revenge, Damon and Enzo resort to violence to convince Bonnie and Jeremy to help them, but their plan takes an unexpected and horrifying turn.
As Damon's behavior escalates from destructive to deadly, Stefan begins to regret their last conversation and decides to track Damon down and intervene. For reasons of her own, Elena volunteers to come along. Dr. Wes (recurring guest star RICK COSNETT) enlists the Travelers to set a trap that will once again test Damon's friendship with Enzo (recurring guest star MICHAEL MALARKEY). After a heart-to-heart talk with Nadia (recurring guest star OLGA FONDA), Matt enlists Caroline and Tyler's help to protect Elena, leading to a violent confrontation. Later, when Stefan tries to comfort a dejected Caroline, their conversation leads to a horrifying realization.
While Nadia (recurring guest star OLGA FONDA) remembers her centuries-long search for her mother, Stefan, Caroline and Matt come up with a desperate new plan to save Elena's life. For the second time, Bonnie and Jeremy must turn to Liv (recurring guest star PENELOPE MITCHELL) for help. Damon baits Tyler into a nasty confrontation, then takes off to seek revenge on Dr. Wes (recurring guest star RICK COSNETT). Caroline and Tyler come to a new understanding. Finally, Bonnie learns of a terrifying secret that will threaten the lives of all her friends.
When Stefan tries to explain recent events to a very sick Elena, her first instinct is to call Damon. At the same time, Damon is trying to figure out how to make a disturbing confession to Elena. While going through Dr. Wes' files, Caroline discovers a frightening secret, and is surprised when Enzo (recurring guest star MICHAEL MALARKEY) appears, claiming to have the solution everyone is searching for. At Enzo's insistence, Caroline asks Stefan to meet her at a mysterious location where they are joined by a group of Travelers, including Sloan (recurring guest star CAITLIN McHUGH), who reveals new information on the importance of doppelgangers.
When Tyler turns up at the Salvatore house with the news that Markos' (recurring guest star RAFFI BARSOUMIAN) plan to break the witches' curse puts Stefan and Elena in imminent danger, Damon suggests they hide out in the remote cabin once owned by Caroline's father. Once there, it becomes obvious to Caroline that Stefan and Elena are keeping a secret, so Damon comes up with a parlor game designed to expose the truth. A ghostly presence at the cabin uses violence and fire to make itself known. Meanwhile, Matt takes charge of Tyler's plan to get information from one of the Travelers, and Bonnie continues to keep the truth about the Other Side from Jeremy, despite warnings from Grams (recurring guest star JASMINE GUY).
When Stefan and Elena escape from Markos' (recurring guest star RAFFI BARSOUMIAN) control, only to find themselves stranded in a remote location, Stefan gets philosophical with Elena about her relationship with Damon. After their attempt to protect the doppelgangers goes badly, Liv (recurring guest star PENELOPE MITCHELL) and Luke (recurring guest star CHRIS BROCHU) come up with a dangerous new strategy. Damon recruits Matt and Jeremy to help him set a trap for Markos, who turns out to have a devastating surprise of his own. Bonnie finally admits to Caroline that she's been keeping the truth about the Other Side from everyone. Finally, while Bonnie searches desperately for a way to stop Markos, Caroline is witness to an unthinkable act of violence by one of the Travelers.
The Vampire Diaries Executive producers Julie Plec and Caroline Dries, and cast give a taste of what's to come in the fifth season. "It is Mystic Falls and essentially you can't be that happy for that long, so there's always got to be that drama."
In the fourth season premiere, Elena awakens on the morning after the accident to find the thing she dreaded most has come true — she died with vampire blood in her system and now must go through the terrible transition to become a vampire ... or face certain death. Stefan promises Elena that he and Bonnie will exhaust every possible way out of the situation, but Damon is furious with his brother for letting Elena die in the first place. Bonnie pays a terrible price for her attempt to change Elena's fate, while Damon takes out his frustration and rage on Matt. In a rare moment of empathy, Rebekah (recurring guest star CLAIRE HOLT) is deeply touched by Stefan and Elena's devotion to one another. Finally, Pastor Young (guest star MICHAEL REILLY BURKE -- Revenge) and the Town Council members begin rounding up the vampires and their supporters, leading to an unexpected tragedy.
Elena tries to cope with the extreme highs and lows that are part of becoming a vampire, and Stefan and Damon almost come to blows while arguing about what is best for her. Damon decides to help Elena in his own way and asks her not to tell Stefan. A stranger, Connor Jordan (recurring guest star TODD WILLIAMS -- Chicago Code), arrives in town and begins questioning Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) and Mayor Lockwood recurring guest star SUSAN WALTERS). Connor's actions quickly convince Stefan that they are dealing with a dangerous vampire hunter. Jeremy and Matt are surprised to see a girl they used to know, April (recurring guest star GRACE PHIPPS -- The Nine Lives of Chloe King), has returned to town and is enrolling at Mystic Falls High. At a town gathering, Elena comes close to losing control until Caroline steps in to help her. Finally, Damon confides his feelings to an unexpected friend.
Damon goes with Elena and Bonnie to visit Whitmore College, where Professor Shane (recurring guest star DAVID ALPAY -- The Borgias) is taking over the Occult Studies classes formerly taught by Bonnie's grandmother. At a fraternity costume party, Damon takes advantage of the wild scene to give Elena a lesson in choosing a victim. Rebekah's (recurring guest star CLAIRE HOLT) attempt to buy Matt's forgiveness falls flat, but she is intrigued by unexpected news from Klaus. When Stefan questions Klaus about Connor's (recurring guest star TODD WILLIAMS) motives, Klaus reveals a long-ago encounter with a powerful group of vampire hunters — flashing back to 12th century Italy — but it is Rebekah who delivers the information that stuns Stefan.
Stefan and Klaus form an uneasy alliance to try and contain the danger that Connor (recurring guest star TODD WILLIAMS) has unleashed on the town. When Connor takes Jeremy, Matt and April (recurring guest star GRACE PHIPPS) hostage at the Grill, Stefan and Damon have a serious disagreement about the best course of action, and Elena is again caught between the two brothers. The situation quickly turns violent when Klaus sends one of his hybrids, Dean (guest star BLAKE HOOD -- 90210), to stand up to Connor. Caroline is surprised to find Hayley (recurring guest star PHOEBE TONKIN) at the Lockwood mansion. Meanwhile, Professor Shane (recurring guest star DAVID ALPAY) works with Bonnie to help her get past her fear and guilt.
Terrifying hallucinations leave Elena shaken and confused, causing her to make a dangerous mistake. After giving Stefan some very disturbing news about Elena, Klaus takes matters into his own hands. Professor Shane (recurring guest star DAVID ALPAY) reveals a story of ancient witchcraft to Damon and Bonnie. With help from Klaus and Stefan, Jeremy begins a new chapter in his life. Finally, Elena makes a painful personal confession to Stefan, and Matt gives Damon startling new information about Professor Shane.
Caroline does her best to be there for Stefan and Elena in a tough time. Damon tries to convince Stefan to help him uncover Professor Shane's (recurring guest star DAVID ALPAY) motives, but Stefan is intent on carrying out a different plan with Klaus. At the annual Miss Mystic Falls Pageant, Elena and Caroline give April (recurring guest star GRACE PHIPPS) advice on which dress to wear, while Tyler and Hayley (recurring guest star PHOEBE TONKIN) work together on a secret project and Damon confronts Professor Shane with his suspicions. Alarmed by the vivid nightmares he's having, Jeremy turns to Matt for help, but the situation escalates sooner than anyone expected. Olympic gold medalist GABRIELLE DOUGLAS guest stars.
When Stefan confronts Damon with a suspicion about Elena, Damon has no choice but to help Stefan investigate. Searching for answers, Damon and Stefan visit modern-day New Orleans to see if they can find anyone who remembers the events of their last visit in 1942, including one of Damon's former flames, Charlotte (guest star MADELINE ZIMA -- Californication). Elena, Caroline and Bonnie share a girls' night while the Salvatore brothers are out of town, and emotions run high when Elena delivers some shocking news. At Hayley's (recurring guest star PHOEBE TONKIN) urging, Tyler confronts one of Klaus' hybrids, Kimberly (guest star ALYSSA DIAZ -- Red Dawn), and the situation quickly escalates into violence. Finally, Damon is faced with a heartbreaking decision.
As a Winter Wonderland--themed party fills the streets of Mystic Falls, Stefan and Caroline find themselves at odds with Tyler over his plans for Klaus and his hybrids. When Caroline proposes a solution to their problem, Hayley (recurring guest star PHOEBE TONKIN) finds a dramatic way to make it clear that she is not on board. Later, Klaus makes a discovery that leads to chaos and violence. Meanwhile, Elena and Damon retreat to the Gilbert lake house to help Jeremy conquer some dangerous inner demons with the help of Bonnie and Professor Shane (recurring guest star DAVID ALPAY), who reveals a piece of ancient history that leaves them all speechless.
Appearing unexpectedly at Mystic Falls High, Rebekah (recurring guest star CLAIRE HOLT) wastes no time trying to force Stefan, Elena and Caroline to answer her questions about the search for a cure, leading to a bombshell piece of information from Elena. When Bonnie's father, Rudy Hopkins (recurring guest star RICK WORTHY -- Supernatural), accepts the role of Interim Mayor, he makes it a priority to protect his daughter, who isn't at all comfortable with the role he suddenly wants to play in her life. Professor Shane (recurring guest star DAVID ALPAY) continues to encourage Bonnie to believe in her powers, but he soon finds himself in danger when he reveals too much to the wrong person. Later, Caroline does her best to comfort Tyler after a violent confrontation. Meanwhile, at the lake house, Damon and Matt train Jeremy, trying to raise his game as a hunter, but Klaus is impatient with their progress and intervenes to speed up the process.
Jeremy is furious when Klaus tries to control him by putting Matt's life in danger. Damon coaches Jeremy as he prepares to take on Klaus' new vampires, but they find that Kol (recurring guest star NATHANIEL BUZOLIC -- Out of the Blue) has beaten them to it. Kol makes it clear that he will stop at nothing to convince everyone to give up the search for the cure. Looking for a new ally, Rebekah (recurring guest star CLAIRE HOLT) reminds Stefan that they were once close friends. When Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) and Mayor Hopkins (recurring guest star RICK WORTHY) question Shane (recurring guest star DAVID ALPAY) about his involvement in the Founders' Council deaths, Bonnie steps in with questions of her own, and Shane's responses push Bonnie to the edge of her powers. Elena negotiates with Klaus to keep Jeremy safe, but when danger suddenly appears from a totally unexpected enemy, Elena comes up with her own daring plan for Jeremy.
When Rebekah (recurring guest star CLAIRE HOLT) turns down Klaus' plea to stop Kol (recurring guest star NATHANIEL BUZOLIC) and protect Jeremy, Klaus turns to Stefan for help. After an angry confrontation with her father, Mayor Hopkins (recurring guest star RICK WORTHY), over his unconventional approach to ending the violence in Mystic Falls, Bonnie has a frightening run-in with Kol, followed by an unexpected visitor. Klaus complicates the already tense feelings between Stefan and Damon by revealing a bit of Stefan's personal life, then surprises Damon by asking for personal advice. Elena tells Stefan about her dangerous plan for Jeremy, leaving Stefan in a difficult spot. When the 1980s Decade Dance at the high school is cancelled by Mayor Hopkins, Stefan finds a charming way to make it up to a disappointed Rebekah.
Shane (recurring guest star DAVID ALPAY) leads an expedition to a desolate island off the coast of Nova Scotia, where he believes the secret of the cure lies hidden. On the trek to the island's interior, Rebekah (recurring guest star CLAIRE HOLT) and Elena continue their bitter rivalry, Stefan does his best to keep the peace and Damon accuses Shane of leading them into a trap. Bonnie and Jeremy try to figure out the message of the Hunter's mark, while Shane reveals more of the legend of Silas and the witch Qetsiyah, along with his own personal history. Back in Mystic Falls, Tyler confronts Klaus, and Caroline is caught up in the violence that follows.
On the island, Damon has an ugly run-in with a Hunter named Vaughn (recurring guest star CHARLIE BEWLEY -- The Twilight Saga), and realizes he is one of the Five. Stefan confesses his true feelings about the possibility of becoming human again to Elena. When a stunning new piece of information about the cure is suddenly revealed, it changes the stakes for everyone. Jeremy helps Bonnie recognize what is real and what is an illusion, and Shane (recurring guest star DAVID ALPAY) is comforted by a woman from his past, Caitlin (guest star CAMILLE GUATY -- Prison Break). Back in Mystic Falls, Caroline and Tyler find that their attempt to translate the code on the Hunter's Sword is futile without help from Klaus, who has his own reasons for solving the puzzle.
When Stefan arrives back in Mystic Falls with Elena and Jeremy, Caroline is immediately worried about Elena's state of mind. Stefan reaches out to Dr. Fell (recurring guest star TORREY DeVITTO) and Matt for help. Still on the island, Damon relays somber news to Rebekah (recurring guest star CLAIRE HOLT), and is surprised at her reaction. Together, Damon and Rebekah learn an unexpected bit of recent history from Vaughn (recurring guest star CHARLIE BEWLEY). Everyone is horrified when Bonnie reveals the rest of Shane's (recurring guest star DAVID ALPAY) plan. Finally, after Damon does his best to help her, Elena comes up with a plan of her own.
Elena's new outlook has everyone concerned, leading Stefan and Damon to agree that going back to the normal routine of high school would be the best thing for her. Caroline is pleasantly surprised when Elena decides to rejoin the cheerleading squad, but her pleasure turns to shock when Elena's behavior proves dangerous. Not giving up on their search for the cure, Damon and Rebekah (recurring guest star CLAIRE HOLT) work together until his unwanted advice catches her off-guard. Klaus tries to use Hayley (recurring guest star PHOEBE TONKIN) to get the information he's after and makes an intriguing discovery in the process. Meanwhile, a bored Elena throws a wild party and gets into an ugly fight.
Realizing that Elena needs some time away from Mystic Falls, Damon takes her to New York City, where he lived and partied hard in the 1970s. When Rebekah (recurring guest star CLAIRE HOLT) also shows up in New York, she's impressed with Elena's secret agenda. Flashbacks reveal Damon's hedonistic life in the underground club scene and a complicated encounter with Lexi (recurring guest star ARIELLE KEBBEL). Meanwhile, Caroline and Stefan try to convince Klaus that it would be in his own best interest to help them track Silas down, and Bonnie struggles to keep her grasp on reality and do the right thing. The band DEAD SARA performs.
Elena and Rebekah (recurring guest star CLAIRE HOLT) take off in search of Katherine and find themselves in a small town in Pennsylvania, where Elena has a surprising encounter with another old acquaintance: Elijah (recurring guest star DANIEL GILLIES). Stefan and Damon are both concerned about Elena's state of mind and are determined to do what's best for her, but she makes it clear that helping her will be difficult. Damon is not sure how to react when Stefan reveals his unexpected plan for the future. Meanwhile, in Mystic Falls, Klaus receives Caroline's reluctant help and comes to a new understanding of Silas' powers.
After making a decision that infuriates Klaus, Elijah (recurring guest star DANIEL GILLIES) proposes a life-changing challenge for Rebekah (recurring guest star CLAIRE HOLT). Caroline finds that her carefully laid plans for the perfect Senior Prom night are disrupted by Elena, so she turns to an amused Klaus for a solution. Determined to get through to Elena, Damon and Stefan both attend the prom, but the evening begins to spiral out of control despite their efforts. When Elena suddenly lashes out in a way no one could have predicted, Matt turns to Rebekah for help. Finally, Bonnie makes a terrifying discovery, and Klaus receives a message that could change everything.
Acting on a mysterious tip that a plot is brewing against him in New Orleans, Klaus makes a trip to the town he and his family helped build. Klaus' questions lead him to a reunion with his former protégé, Marcel (guest star CHARLES MICHAEL DAVIS -- Grey's Anatomy, The Game, Switched at Birth), a charismatic vampire who has total control over the human and supernatural inhabitants of New Orleans. Determined to help his brother find redemption, Elijah (recurring guest star DANIEL GILLIES) follows Klaus and soon learns that Hayley (recurring guest star PHOEBE TONKIN) has also come to the French Quarter searching for clues to her family history, and has fallen into the hands of a powerful witch named Sophie (guest star DANIELLA PINEDA -- Homeland). Meanwhile, in Mystic Falls, Damon and Stefan continue with their plan for Elena, while Katherine reveals a surprising vulnerability to Rebekah (recurring guest star CLAIRE HOLT) and asks her to deliver a message.
Damon and Stefan try a brutal new approach to provoke Elena into turning her humanity back on, and Caroline is frustrated when her attempt to intervene backfires. When Elena figures out a way to call the Salvatore brothers' bluff, they call for backup from a surprising source. Matt gives Rebekah (recurring guest star CLAIRE HOLT) some unsolicited advice on her life choices, and she tries to help him in return. Caroline has a confusing and dangerous encounter with Klaus, and Katherine is suspicious when Bonnie makes her an offer that she promises will benefit them both.
As Graduation Day approaches, Caroline tries to distract Elena by focusing on simple tasks like sending out announcements, but Elena won't be swayed from her new obsession. Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) calls Damon and Stefan to the hospital, where someone has been attacking patients. Still trying to force Katherine to help her, Bonnie refuses to give up on her plan to defeat Silas. As a violent wind storm causes a power outage in Mystic Falls, ghosts suddenly appear — some with good intentions and some bent on revenge.
In the season finale, it's Graduation Day and Mystic Falls is overrun with ghosts intent on settling old scores and fulfilling their supernatural destinies. Damon's life is in danger after a ghostly encounter, while Matt and Rebekah (recurring guest star CLAIRE HOLT) join forces to battle a ghost determined to find the cure. As everyone gathers for the graduation ceremony and the ghosts converge, help comes from an unlikely hero. Caroline receives a touching and unexpected graduation present, and Bonnie's plan leads to the closing of the veil. Elena makes a decision about the Salvatore brothers and faces an epic confrontation with Katherine. Finally, Stefan discovers a horrifying clue to the mystery surrounding Silas.
In the third season premiere, on the morning of Elena's 18th birthday, Caroline Forbes (series star CANDICE ACCOLA) is busy planning a party, but Elena is focused on searching for any clues that might help her discover where Stefan is. Damon is also searching for Stefan, while trying to protect Elena and keep her from doing anything that would draw Klaus's attention. Meanwhile, Klaus and Stefan are busy trailing a werewolf named Ray Sutton (recurring guest star DAVID GALLAGHER -- Super 8, 7th Heaven). Now working at the Mystic Grill along with Matt Donovan (series star ZACH ROERIG), Jeremy Gilbert (series star STEVEN R. MCQUEEN) is struggling to understand why he keeps seeing the ghosts of Vicki (recurring guest star KAYLA EWELL) and Anna (recurring guest star MALESE JOW) since he was brought back to life by Bonnie Bennett's (series star KAT GRAHAM) magic.
Klaus puts a plan in motion that will give him even more power, but even with the unwilling participation of werewolf Ray Sutton (recurring guest star DAVID GALLAGHER), things don't go exactly as Klaus had planned. Damon and Alaric reluctantly go along with Elena's new strategy to find Stefan, leading Damon into a dangerous fight with an unexpected enemy. Jeremy turns to Matt for help as he continues to try to understand what the ghosts from his past want from him. Unaware that Caroline is in need of his help, Tyler faces an emotional confrontation with his mother (recurring guest star SUSAN WALTERS -- One Tree Hill, Melrose Place).
Klaus and Stefan arrive in Chicago, where Stefan is reunited with a vampire (recurring guest star CLAIRE HOLT -- Pretty Little Liars, H20: Just Add Water), who hasn't really moved on from her interest in him decades earlier. In a flashback to Chicago in the 1920s, Stefan comes face to face with a shocking chapter from his wild past. After Damon gets a tip on Stefan and Klaus' whereabouts from an unexpected source, he and Elena follow their trail. Meanwhile, back in Mystic Falls, Tyler is concerned about Caroline and turns to Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) for help.
Still in Chicago, Klaus uses Gloria (guest star CHARMIN LEE -- Girlfriends, Supernatural), a witch he knew long ago, to help him track down missing information that will explain why his plan isn't working. Gloria's spells reveal intriguing glimpses of the truth, but she soon realizes she needs Stefan's knowledge to complete the puzzle. When Stefan suddenly finds himself in danger, help comes from a surprising ally. Back in Mystic Falls, a frustrating new enemy pushes Damon over the brink and he lashes out in a way that will have lasting consequences. Caroline struggles with her own emotional issues, even as she tries to help Elena face her feelings. Jeremy makes a brief but disturbing breakthrough with one of his ghostly visitors, leaving him more confused than ever. Finally, Bonnie has a strange encounter that will affect everyone.
Despite all that has happened, Caroline is determined to see that Elena, Bonnie, Matt and Tyler all enjoy a traditional Senior Prank Night before the school year begins at Mystic Falls High School. However, when uninvited guests show up, it doesn't take long for the evening to take a deadly turn. Damon convinces Jeremy that he can use his new connection to the other side to help find a way to defeat Klaus. Finally, Klaus deepens his hold on Stefan and uses him for increasingly violent and dangerous purposes.
On the first day of their senior year, Elena, Caroline, Bonnie and Matt are still reeling from recent events, while Tyler seems to be enjoying everything a little too much. Damon is annoyed by a new houseguest, and everyone is surprised by the arrival of a new student in Alaric's history class. Matt asks Bonnie for help when he realizes he made a serious mistake. Meanwhile, Stefan continues to carry out his latest assignment from Klaus.
As Mystic Falls prepares to celebrate the traditional Illumination Night, the town is invaded by spirits of the dead. After a particularly violent encounter with an angry spirit, Damon asks Bonnie to find the reason behind the ghosts' surprising power. Elena convinces Jeremy to use his connection to the other side to help her find a new way to reach Stefan, leading Jeremy to a terrible choice. Finally, Alaric discovers a long-hidden clue to the past.
With help from Elena and Bonnie, Alaric tries to decipher the meaning behind his recent discovery. Elena and Rebekah (recurring guest star CLAIRE HOLT) engage in a mean-girl power struggle, until Rebekah finally reveals some of her family's ancient secrets and the violent past she shares with Klaus and Elijah (recurring guest star DANIEL GILLIES). Damon tries a reckless new approach to make a breakthrough with Stefan, and they're both surprised by an unlikely ally.
On the night of the Homecoming dance, Rebekah (recurring guest star CLAIRE HOLT) opens up to Elena about why the evening is so important to her, leaving Elena with conflicting emotions. Caroline and Matt are both shocked at Tyler's behavior throughout the evening. The night takes a surreal turn when Klaus puts his latest plan into action. Determined to outsmart Klaus, Damon enters into a dangerous partnership, leading to a terrifying turn of events. The band MY MORNING JACKET performs in the party scenes.
Stefan has hidden the coffins containing the bodies of Klaus' family, and Klaus quickly turns to violence to convince Damon and Elena that no one will be safe until he finds Stefan and gets his family back. Tyler continues to make the most of his new abilities as a hybrid, but he has to face the disturbing consequences of his actions as well. After a terrifying incident, Elena and Alaric grow increasingly concerned about Jeremy's attitude and, ultimately, his safety. Alaric meets the beautiful Dr. Fell (recurring guest star TORREY DeVITTO -- Pretty Little Liars), who is intrigued with his amazing ability to heal. While trying to strike a deal with Klaus, Elena delivers news that truly shocks him. Also in the episode, Internet personality JUSTINE EZARIK appears as a bartender.
Although Caroline is in no mood to celebrate her 18th birthday, Elena, Bonnie and Matt surprise her with a small party in an unusual location. Damon and Stefan disagree on the best way to handle Klaus, and a reckless Stefan decides to test his theory by taking things to dangerous extremes. Bonnie is concerned when Elena tells her about Jeremy's new plans. At a Founder's meeting, Alaric once again runs into Dr. Fell (recurring guest star TORREY DeVITTO), who is in the middle of an argument with her ex-boyfriend, the medical examiner (guest star DAVID COLIN SMITH). Tyler refuses to go along with Klaus' latest demand, and is surprised when Klaus seems to accept his decision.
Bonnie believes her recurring dreams about Klaus' coffins will tell her how he can be killed. The dreams also lead Bonnie to a reunion with her mother, Abby (recurring guest star PERSIA WHITE -- Girlfriends), whom Bonnie hasn't seen for 15 years. At Abby's remote farmhouse, Bonnie and Elena meet Jamie (guest star ROBERT RI'CHARD -- One on One), the young man Abby took in years earlier. Bonnie's sudden appearance catches Abby off guard, but she does her best to explain the past. Tyler turns to an unexpected ally in his quest to regain his free will. Damon is intrigued by Alaric's new friend, Dr. Fell (recurring guest star TORREY DeVITTO), and Klaus continues his bitter negotiations with Stefan over control of the coffins containing his family members.
Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) delivers some disturbing news to Alaric and Elena about the weapon used in a recent murder. In the Salvatore brothers' escalating quest to kill Klaus, Stefan turns to Bonnie and Abby (recurring guest star PERSIA WHITE), while Damon reaches out to an old acquaintance for help in setting up an elaborate plan. Intent on a plan of his own, Klaus hosts a strange dinner party, where he reveals another story from his family's violent past until an unexpected guest brings the party to an end. Meanwhile, Caroline is heartbroken when she is unable to stop a tragedy from unfolding.
Elena is surprised to receive an invitation to a formal ball, and when Damon and Stefan hear the party is being hosted at Klaus' newly renovated mansion, they both insist on attending the event with her. Caroline and Matt also receive invitations to the ball from unexpected admirers. At the elegant party, Elena learns of a horrifying plan that could lead to numerous deaths and she must decide who she can trust with her new information. Caroline discovers a side of Klaus no one would have suspected. Finally, after an evening of violence and dashed hopes, Damon finds a new way to cope.
After starting her day with a startling discovery of Damon's latest indiscretion, Elena is frustrated to find that none of her friends agree with her on how they should react to the Original family's internal power struggle. Once again caught up in the destiny of the Bennett witches, Bonnie and Abby (recurring guest star PERSIA WHITE) find themselves playing a part in a ritual to appease the spirits of nature. When Elijah (recurring guest star DANIEL GILLIES) gives Damon and Stefan a dangerous ultimatum that puts Elena in danger, they turn to Alaric and Meredith (recurring guest star TORREY DeVITTO) for help with a plan that leads them to a terrible choice.
The present-day murders in Mystic Falls remind Damon of a similar crime spree a century earlier. In flashbacks to 1912, Damon recalls a beautiful vampire, Sage (recurring guest star CASSIDY FREEMAN -- Smallville), who showed him a whole new way to exist. Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) warns Damon not to get involved in her investigation, but Damon is convinced she's going after the wrong suspect. Elena and Matt resort to breaking and entering in their search for evidence to prove Dr. Fell (recurring guest star TORREY DeVITTO) is a murderer. Additionally, Elena comes to a new understanding of the path her life has taken, and Damon makes an emotional confession to Stefan. Plus, for reasons known only to her, Rebekah (recurring guest star CLAIRE HOLT), becomes interested in locating one of the town's oldest landmarks.
A century after their first encounter, Damon and Sage (recurring guest star CASSIDY FREEMAN) meet again at the ceremony to kick off the restoration of Wickery Bridge. Damon is surprised to learn the reason why Sage has returned, and pleased when she devises an unusual method to help him figure out what Rebekah (recurring guest star CLAIRE HOLT) is up to. Abby (recurring guest star PERSIA WHITE) is having a hard time adjusting to her new reality, despite Bonnie and Caroline's efforts to help. When Damon informs Elena of Stefan's latest struggles, she reaches out to Stefan to help her save a friend in danger, in hopes that it will help bring Stefan even closer to his humanity. Finally, when Damon discovers a new secret weapon, he lets Stefan in on the news.
Damon and Stefan focus a new project that will bring them closer to destroying Klaus, and they quickly bring Elena, Caroline and Matt in on the plan. After Klaus threatens someone close to Bonnie, she has no choice but to work on the spell he needs. Meanwhile, Klaus and Rebekah (recurring guest star CLAIRE HOLT) find the perfect motivator to convince Finn (recurring guest star CASPAR ZAFER -- Tirante el Blanco) to cooperate with them, but Rebekah is more interested in her own brutal plan to take revenge on Damon. Stefan's emotional turmoil leads him to a dangerous confrontation with Klaus and, later, to a heartbreaking moment with Elena.
Elena and Damon set off together to make sure Jeremy is safe in Denver, and to see if his special abilities can help reveal the information they need about ancient vampire bloodlines. It doesn't take them long to learn that Jeremy has been hanging with the wrong people. Stefan and Klaus both go to brutal extremes in their search for the missing weapon. Caroline is thrilled when Tyler returns to town, but Tyler soon suspects that something has been going on between Caroline and Klaus. Matt has his hands full trying to keep Rebecca (recurring guest star CLAIRE HOLT) busy organizing the school's upcoming 1920s Decade Dance.
Alaric finds an unexpected ally to guide him on his dangerous new path, while Damon and Meredith (recurring guest star TORREY DeVITTO) try to figure out what their next move should be. At the school's 1920s Decade Dance, Bonnie asks Jamie (recurring guest star ROBERT RI'CHARD) to go with her and, at Caroline's suggestion, Elena asks Stefan to be her date. Caroline is pleasantly surprised when Tyler shows up at the dance determined to sweep her off her feet, but Klaus does his best to come between them. The dance takes a deadly turn when Damon and Stefan realize they need the help of Matt, Jeremy and especially Bonnie to undo a spell that could prove devastating for everyone.
Klaus acts on his intentions to leave town with Elena, but finds resistance from a surprising new enemy. Bonnie calls on Abby (recurring guest star PERSIA WHITE) to help her with a difficult spell. As events spiral out of control, Elena is determined to protect Caroline; Damon and Stefan enlist Tyler's help; and Bonnie and Jeremy take a terrifying risk to make sure her spell is effective. Plus, Damon and Stefan have a surprisingly candid conversation about the future.
In the third season finale, determined to protect his sister, Jeremy makes a decision that will change everything. In the harsh reality of the present situation, Elena longs for simpler times when her parents, Grayson (guest star JASON MACDONALD) and Miranda (guest star ERIN BEUTE), and Aunt Jenna (guest star SARA CANNING) were still alive and her biggest concern was her relationship with Matt. Stefan and Damon leave Mystic Falls together on a mission, but soon split up when Elena needs one of them. Caroline and Tyler are forced to make a life-changing decision. Finally, Bonnie makes a secret deal that has heartbreaking consequences.
Returning for its second season, The Vampire Diaries is the story of two vampire brothers obsessed with the same beautiful girl, who are battling to control the fate of an entire town. During season one, Stefan Salvatore (series star PAUL WESLEY) and Damon Salvatore (series star IAN SOMERHALDER) returned to their hometown of Mystic Falls, Virginia, for very different reasons: Stefan was determined to get to know Elena Gilbert (series star NINA DOBREV), who bears a striking resemblance to Katherine Pierce, the beautiful but ruthless vampire the brothers knew and loved in 1864, while Damon was intent on releasing Katherine from the tomb where he believed she was trapped by a witch's spell all those years ago. In the season one finale, Elena's Uncle John set a plan in motion that brought the Founder's Day celebration to an end amid chaos, destruction and death, and saw the return of the vengeful Katherine Pierce.
When a confused and desperate Caroline leaves the hospital and joins her friends at the Mystic Falls Carnival, Damon wants to take immediate action, but Stefan and Elena come to Caroline's defense. Matt is completely mystified by Caroline's behavior, but still tries to tell her about his feelings for her. Meanwhile, Damon has suspicions about Tyler's Uncle Mason (recurring guest star TAYLOR KINNEY) and uses Tyler's volatile personality in an attempt to get Mason to reveal his secret. Upset with everything going on around her, Bonnie takes her anger out on Damon.
Stefan takes drastic measures to find out the real reason Katherine has returned to Mystic Falls, and is shocked when she reveals new secrets about what really happened in 1864. Damon tries a new tactic to resolve his issues with Mason (recurring guest star TAYLOR KINNEY), but it proves costly. Meanwhile, Tyler pushes Mason to tell him the truth about the Lockwoods, and when Katherine delivers an ultimatum, Stefan and Elena are left with very few options.
Stefan takes drastic measures to find out the real reason Katherine has returned to Mystic Falls, and is shocked when she reveals new secrets about what really happened in 1864. Damon tries a new tactic to resolve his issues with Mason (recurring guest star TAYLOR KINNEY), but it proves costly. Meanwhile, Tyler pushes Mason to tell him the truth about the Lockwoods, and when Katherine delivers an ultimatum, Stefan and Elena are left with very few options.
Tyler learns more about the Lockwood family curse from Mason (recurring guest star TAYLOR KINNEY). Stefan and Damon argue over how to handle Mason. Elena tries to keep Jeremy from becoming more involved with the Lockwood mystery, but Jeremy makes an effort to hang out with Tyler. Mason gives Sheriff Lockwood (recurring guest star MARGUERITE MacINTYRE) some startling information, leading to a night of violence, confession and heartbreak.
Despite Elena's efforts to keep Jeremy safe, he offers to help Damon and Alaric deal with Katherine. Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) and Caroline share a few rare moments of quality mother/daughter time. Bonnie accidentally discovers new information about Mason (recurring guest star TAYLOR KINNEY) and shares it with Stefan, which leads to Damon taking matters into his own hands.
Stefan and Damon decide on a new plan to deal with Katherine at the Lockwood's masquerade ball. Katherine calls on an old friend, Lucy (guest star NATASHIA WILLIAMS -- Romeo!, She Spies), to attend the ball with her. Bonnie, Jeremy and Alaric all do what they can to help Stefan and Damon, but Katherine has a surprise planned that none of them could foresee. Things take an ugly turn when Matt and Tyler start doing shots with their friends.
Stefan and Damon come to Elena's assistance and, in the process, learn surprising new information about people, vampires and events in the distant past. Jeremy helps Bonnie after she casts a difficult and exhausting spell, and Caroline does what she can to make things easier for Tyler. Plus, Stefan and Damon reach a new understanding.
Elena puts herself in a dangerous position as she searches for the truth about Katherine's past and what her own future may hold. Knowing that Stefan would never agree to her plan, Elena swears Caroline to secrecy. Damon uses a newfound confidant to help him try to discover the real purpose and power of the moonstone. Jeremy and Bonnie meet Luka Martin (guest star BRYTON JAMES -- The Young and the Restless, Family Matters), a new student with a surprising family history.
Elena decides to take matters into her own hands and offers a tempting incentive to Rose (recurring guest star LAUREN COHAN) for her help. When things take an unexpected turn, however, Rose calls on Damon to deal with the plan Elena has set in motion. Jeremy's reckless attempt to help Bonnie retrieve the moonstone lands him in a life-threatening position and forces Stefan to put himself in danger. Meanwhile, Bonnie and Luka (recurring guest star BRYTON JAMES) form a closer connection, and Tyler shows Caroline the Lockwood cellar, where she makes a discovery that leaves them both terrified.
As the full moon approaches, Caroline helps Tyler prepare for the transformation he is powerless to stop. While Stefan and Katherine play mind games on one another, Damon and Alaric are suspicious when a stranger named Jules (recurring guest star MICHAELA McMANUS -- One Tree Hill, Law & Order: Special Victims Unit) shows up in Mystic Falls, searching for her missing friend, Mason. Elena is frustrated at the lengths Jeremy and her friends have gone to in order to keep her safe. Bonnie and Luca (recurring guest star BRYTON JAMES) work together on a spell, while still keeping secrets from one another. Finally, Elijah (recurring guest star DANIEL GILLIES -- Spider-Man 2) makes an unexpected appearance with an offer that could change everything.
Stefan has his own ideas about Elena's new plan for the future. While Damon tries to get the truth out of Jules (recurring guest star MICHAELA McMANUS), he asks Elena to keep an eye on Rose (recurring guest star LAUREN COHAN), a situation that turns unexpectedly dangerous. Caroline and Matt try to be honest about their feelings for one another, and Tyler's reaction to Caroline's generosity comes as a surprise to her. Meanwhile, Damon struggles to hide his true feelings when a life-and-death crisis hits him harder than he expected.
Johnathan Gilbert's (recurring guest star DAVID ANDERS) return to Mystic Falls comes as an unhappy surprise to Elena, Jenna and Damon. Caroline lets Stefan know about her conversation with Tyler, and Stefan does his best to reach out to a confused and conflicted Tyler. Jeremy comforts Bonnie after her disturbing conversation with Jonas (recurring guest star Randy Goodwin -- Girlfriends). Plus, when Jules (recurring guest star MICHAELA McMANUS) takes a hostage, the situation quickly escalates into a violent confrontation.
Stefan and Elena get away for what they hope will be a romantic weekend at the Gilbert family lake house, not realizing that they've been followed. Jenna starts to worry that Alaric isn't being honest with her. Jules (recurring guest star MICHAELA McMANUS) explains the importance of the sun and moon curse to Tyler, but leaves out an important detail. Damon attends a tea at the Historical Society in order to talk to Elijah (recurring guest star DANIEL GILLIES), but Elijah isn't giving up any secrets. With help from Caroline and Jeremy, Bonnie uses deceptive measures to get shocking new information out of Luka (recurring guest star BRYTON JAMES). Finally, Tyler offers Matt some relationship advice.
Stefan tells Elena about a dark time in his history and the surprising person whose influence changed everything. After getting the truth out of Luka (recurring guest star BRYTON JAMES), Jonas (recurring guest star RANDY GOODWIN) makes his feelings clear to Bonnie and Jeremy. Trying to catch Elijah (guest star DANIEL GILLIES) off-guard, Damon arranges a dinner party for him with Jenna, Alaric and Andie (recurring guest star DAWN OLIVIERI -- Heroes), but last-minute information throws Damon's plan into chaos.
Katherine's mind games are getting on everyone's nerves, but Damon, Stefan and Elena realize that her knowledge of Mystic Falls' history will help them stay alive. Frustrated with her relationship with Matt, Caroline finds a new way to get his attention. Alaric makes a surprising confession to Jenna, and Katherine makes a different kind of confession to Damon. Meanwhile, Stefan and Bonnie try to convince Jonas (recurring guest star RANDY GOODWIN) and Luka (recurring guest star BRYTON JAMES) that they should all be working together, but Jonas' lack of trust leads to a violent and fiery confrontation.
Elena and Alaric both lash out at John (recurring guest star DAVID ANDERS) when Isobel's (recurring guest star MIA KIRSHNER) unexpected arrival leaves Jenna devastated. Bonnie works with Damon and Jeremy to find the spell they'll need to harness her ancestors' power, and a heartbroken Caroline doesn't know what to do about Matt. Plus, Stefan and Damon realize they have a new secret weapon.
As the high school prepares to throw a "1960s Decade Dance," Elena starts receiving disturbing messages from Klaus via an unusual source. Bonnie tries to reassure Jeremy that she is strong enough to help Elena, but a worried Jeremy asks Stefan for advice. Caroline talks Matt into taking her to the dance. Expecting Klaus to show up at the dance, Damon and Alaric attend as chaperones, but Klaus is playing a complicated game that keeps them on edge. Finally, Damon comes up with a new plan of action that shocks and upsets everyone.
Stefan and Damon are furious when they discover that Elena has defied them both to make a new ally and take control of the plan to out-maneuver Klaus (recurring guest star JOSEPH MORGAN -- Ben Hur, Doc Martin). Disagreement over how to protect Elena leads to growing tension between the Salvatore brothers. Meanwhile, Stefan has his hands full trying to keep a confused and frightened Jenna safe. Flashbacks to 1491 reveal Katherine's introduction to Elijah (recurring guest star DANIEL GILLIES) and Klaus, along with the origin of the moonstone curse. Plus, Elena learns shocking new information about Klaus' motives.
Damon is willing to go to extraordinary lengths to prevent Elena from being a victim of Klaus's (recurring guest star JOSEPH MORGAN) plan to break the curse. Damon's actions put him at terrible odds with Stefan and the tension that started brewing between the brothers over their differing opinions of how to help save Elena's life blows up into a full-scale conflict. Tyler returns to Mystic Falls after receiving a disturbing phone call. With the full moon marking the arrival of the sacrifice ritual, Stefan and Elena spend a romantic day together ... afraid it might be their last.
With the arrival of the full moon, Elena tries to prepare for whatever Klaus (recurring guest star JOSEPH MORGAN) has planned and Tyler faces his second transformation. The terrifying events quickly spin out of control, despite an unexpected act of courage. Finally, Damon admits the truth to Stefan about a terrible new development they must face.
In the season finale, while Mystic Falls presents a screening of "Gone with The Wind" in the town square, Damon's memories of Katherine in 1864 mix with the reality of Elena in the present day. Stefan pays a terrible personal price for his attempt to prevent a tragedy, and Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) makes a deadly mistake while trying to keep everyone safe. More than one life hangs in the balance as the consequences of the sacrifice ritual play out to a horrifying conclusion.