Grey's Anatomy

Meredith Grey and four other surgical interns try to balance life and work.

Meredith puts her career on the line to save a newborn

The emergency room fills with patients from the annual bike-messenger race.

Cristina's encounter with a former nurse changes her forever.

Meredith believes she erred during surgery and endangered her career.

Alex works hard to gain the trust of Annie, a patient with a large tumor.

Derek and Meredith try to be discreet after spending the night together.

Meredith becomes disenchanted with her ignorance of parts of Derek's life.

A sexually transmitted disease affects members of the hospital staff.

Meredith and Cristina discuss their relationship woes.

A family arrives at Seattle Grace Hospital after a serious car accident.

Family secrets become public when Meredith's mother comes to the hospital.

Cristina proves to be a difficult patient as she continues to recover.

A young woman's religious father forbids a life-saving operation.

A train crash brings several seriously injured patients to the hospital.

A male patient experiences a hysterical pregnancy.

Derek and Addison's friends come to Seattle Grace seeking radical surgery.

The Thanksgiving holiday is difficult for the interns and residents.

Meredith realizes a patient was her one-night stand.

An inmate jeopardizes her health to get out of solitary confinement.

Burke and Yang disagree on the treatment of a young boy.

Izzie cannot ignore the chemistry she shares with a patient.

Meredith and Cristina lie to each other about their relationships.

The nurses at Seattle Grace Hospital go on strike.

Meredith's premonition of having a bad day is realized.

The code-black situation escalates.

Meredith looks into her family's dirty laundry after a visit to her mother.

Bailey treats Addison for an unusual feminine issue.

Derek and Addison come to terms with their relationship.

A series of deaths occur, bringing out the doctors' superstitious sides.

George begins to overstay his welcome.

Izzie grills George about the personal details of his life.

Burke and Izzie have a new suggestion for Denny.

Burke and Izzie continue to search for a new heart for Denny.

Pressure to find a new heart for Denny increases.

Pressure to find a new heart for Denny increases.

Izzie copes with the loss of Denny and her decision to leave the program.

A surgical patient lives what may be her last day to the fullest.

Cristina helps Preston cope with his hand tremor

Addison doubts her abilities

Derek learns more about Mark and Addison's relationship.

George and Addison work with a pregnant woman who faces an unusual dilemma.

Meredith assists with a procedure Sloan has never experienced.

Derek and Addison strive for a civil relationship.

Cristina has a crisis of conscience about her teamwork with Burke.

Mark and Derek must work together when two brothers seek medical help.

Thatcher Grey arrives to see his new granddaughter.

George's father continues to recover after his surgery.

Bailey proposes the creation of a free clinic.

A surgical patient endangers the lives of those around her.

A ferryboat accident tests the interns.

Meredith's friends and fellow doctors work to save her life.

Derek and Meredith's friends work to bring her back from the brink.

Derek treats a patient close to him; Alex continues his work with Jane Doe.

The hospital board begins interviewing candidates for the chief position.

Izzie faces her past and finds comfort in George.

The attendings are extra-attentive to the chairman of the hospital board.

Addison takes leave from Seattle Grace and visits friends in Los Angeles.

Addison takes leave from Seattle Grace and visits friends in Los Angeles.

Callie's suspicions of George and Izzie grow.

Cristina and Burke's wedding day arrives.

Cristina, back from her honeymoon trip, searches in vain for Burke.

Lexie tries to have a heart-to-heart with unwilling Meredith.

George tells Callie of his past indiscretion with Izzie.

The chief's wife rushes their niece to Seattle Grace.

Meredith thinks her mother's ashes are haunting her.

The chief has a gentlemen's evening with his fellow surgeons.

Derek asks for more than a physical connection with Meredith.

Bailey treats a patient who was her high-school crush.

An ambulance crash endangers the lives of the paramedics involved.

Meredith works to save the life of a paramedic trapped inside an ambulance.

Bailey's family faces a medical trauma just as her marriage falls apart.

Meredith, Alex, Izzie and Cristina compete in a surgical contest.

Addison returns to Seattle Grace to perform an operation.

Meredith and Derek admit a veteran into their clinical trial.

The Chief insists Erica perform a risky surgery on his mentor.

The surgeons work to free a boy from a block of cement. Part 1 of 2.

The surgeons work to free a boy from a block of cement. Part 2 of 2.

Meredith and Derek learn that "happily ever after" isn't easy.

Meredith and Derek learn that "happily ever after" isn't easy.

A plumbing leak becomes a deluge and wreaks havoc at Seattle Grace.

Meredith freaks out when Derek discovers her mother's old diary.

Bailey heads up a team of surgeons performing a "domino procedure."

The Chief gives Bailey the challenge of removing a girl's inoperable tumor.

The Chief announces to the residents that a solo surgery will be awarded.

One of Meredith's oldest friends becomes an intern at Seattle Grace.

Lexie and Sadie have a surgery go horribly wrong.

Cristina is awarded the first solo surgery among the residents.

Bailey teams with Seattle Grace's new pediatric surgeon, Arizona Robbins.

Derek's mother, Carolyn, makes a surprise visit to Seattle!

A patient's condition becomes more and more dire.

Derek searches for the perfect way to propose to Meredith.

Addison, Naomi and Sam reunite with old friends.

Derek's confidence is shaken as he faces off with Addison!

Derek learns that more of his patients have died than survived.

Meredith must summon the strength to convince Derek to come back to work.

Derek is set to perform his first surgery after his breakdown.

Izzie endures aggressive treatment for her cancer.

Izzie receives a surprise hospital visit from her handful-of-a-mother.

Meredith, Derek and all of their friends prepare for the big wedding.

Izzie contemplates whether or not to undergo a risky surgery.

Izzie contemplates whether or not to undergo a risky surgery.

The staff deals with George's death; George's mother must make a decision.

The staff deals with George's death; George's mother must make a decision.

Seattle Grace residents position themselves to avoid layoffs.

Meredith must save Thatcher's life.

The residents of Seattle Grace and Mercy West vie for their careers.

All of the Mercy West and Seattle Grace residents must defend their actions

Derek challenges Richard's authority.

Cristina tests her boundaries with Owen.

Owen recruits a fellow Iraq War vet to be the new cardiothoracic surgeon.

Mark and Lexie must cope with the arrival of a woman from his past.

Cristina is assigned the lead on a complicated surgery.

Izzie returns, hoping to reconcile with Alex.

Derek faces a lawsuit on his first day as interim chief.

Meredith struggles with her new duties as the chief's wife.

Callie, Bailey and Richard present pivotal surgical cases from their pasts.

Callie and Arizona try to help Teddy and Sloan move on from their pasts.

Owen and Richard compete for an extremely difficult surgery.

Arizona and Callie have different opinions about the future.

Parts of Alex's past are revealed to his friends and colleagues.

Mark, Teddy, Callie and Arizona help Sloan deliver her baby.

Bailey preps the team with mandatory sensitivity training.

Karev treats a troubled teen; Meredith shares her suspicions with Cristina.

The hospital is hit with an unprecedented crisis.

Meredith and Cristina's surgical skills are put to the test.

Derek makes a decision to resign as chief and return to surgery.

Meredith finally tells Derek about her pregnancy and miscarriage.

Issues surface when Derek's estranged sister visits unexpectedly.

Derek and Meredith visit the obstetrician and receive disturbing news.

As part of their training, Seattle Grace's residents are put in charge.

A documentary crew visits the hospital six months after the shooting.

Owen puts the residents through a rigorous trauma certification drill.

Doctors try to save the life of a political figure from the Middle East.

Derek and the attendings go out to celebrate.

Concerned about Cristina, Derek tekes her on a fishing trip.

A gunman open fires at a college, sending mass casualties to the hospital.

Arizona tries to reconcile with Callie, who has big news to share.

Meredith feels left out when Derek breaks ground on his clinical trial.

Alex butts heads with the new OB; Mark bribes Jackson for information.

Meredith volunteers to run the ER for a night.

Meredith's fertility treatments start affecting her eyesight.

Richard tries to get Adele into Derek and Meredith's Alzheimer's trial.

A cataclysmic event leaves the doctors shaken;

Everyone tries to help Callie and her baby recover.

Meredith and Derek make a life-changing decision.

Work and personal pressures leave Meredith on edge.

The new chief resident is chosen.

Meredith faces the repercussions of messing with the medical trial.

Meredith and Derek's relationship concerns Zola's adoption counselor.

The chief makes a decision that shocks everyone at Seattle Grace.

A stampede at a comic book convention leads to an influx of patients.

The residents try to impress Jackson's mother, Catherine Avery.

Meredith tries to get Derek interested in a patient's rare brain tumor.

Owen organizes a baseball game against Seattle Presbyterian.

Jackson's suspicions about Mark and Lexie interfere with work.

Teddy is called away on another case, as Henry is brought in for surgery.

Teddy asks Cristina to help with an O.R. patient.

The doctors form two teams to operate on conjoined twins.

Richard's 10,000th surgery is a liver transplant for two sisters.

Meredith dreams of what her life would have been.

Callie surprises Arizona with a romantic evening.

Amelia arrives at Seattle Grace to beg Derek to help with a case.

As Adele's condition deteriorates, Richard considers making a change.

Derek asks Meredith to work with him in neuro again.

An escaped lion puts lives and relationships in danger.

Cristina makes Owen tell her about the intimate details of his affair.

Richard faces a disturbing realization while visiting Adele.

The residents travel to San Francisco for the oral boards.

The residents agonize over their upcoming exam results.

The residents choose their future positions.

A dangerous situation leaves the doctors fighting to stay alive.

The doctors of Seattle Grace try to cope with loss.

The doctors cope with heartache and injuries caused by the plane crash.

The crash survivors must make a life-changing decision.

Out of consideration for Derek, Meredith stops talking about her surgeries.

Meredith and Cristina rely on each other as they face more responsibility.

The doctors must face the realities of their injuries.

Owen and Cristina navigate their relationship amid the pending lawsuit.

Meredith asks Heather to help Derek's hand.

The doctors prepare for Bailey's wedding.

Bailey continues to put off her wedding as she tries to save Adele's life.

Derek, Meredith, Arizona and Cristina receive news about the lawsuit.

A new doctor at Seattle Grace puts others on edge.

Derek and April fight to find a solution for the hospital.

Several of the doctors compete to be the new face of Seattle Grace.

Owen is faced with tough decisions.

News of Seattle Grace's financial issues spreads.

The doctors juggle multiple transplant surgeries simultaneously.

More positive changes are made by the hospital's new management.

A gas tanker explodes on a highway, resulting in multiple injuries.

Derek and Meredith take preventive steps for their children's future.

After several of Bailey's patients die, she becomes the focus of a CDC investigation.

Bailey continues to shut everyone out; Owen worries that Ethan could end up in foster care; a new craniofacial specialist comes to the hospital to work on a young patient; a magician's assistant needs medical attention after a trick goes awry.

The doctors prepare for a superstorm headed for Seattle.

As the storm rages, patients are brought to the hospital by the busload and resources dwindle.

Following the storm, a mudslide injures first responders and citizens.

Callie makes a decision about her relationship.

Derek and Meredith adjust to life at home with their newborn.

The doctors put together a fundraising gala.

Meredith struggles to balance her roles as a surgeon and a mother.

Callie and Derek collaborate on a brain mapping project.

Costumed patients create a challenge for the doctors; Derek and Ben work on a new surgical technique; Richard asks a resident to perform his next surgery, angering Bailey.

A betrayal intensifies the issues between Cristina and Meredith; Matthew and April make a decision about their relationship; Bailey faces difficulties with Ben's return.

As Callie is faced with a malpractice suit, her supportive father (Hector Elizondo) visits and shares a secret; past details about Callie and Arizona's marriage are revealed.

Ben worries that an innocent conversation with Derek could end up causing problems for Bailey; Cristina turns to Shane as tension with Meredith increases; April's upcoming wedding creates an uncomfortable situation for Stephanie and Jackson.

April's visiting sisters get on her nerves; when Matthew and Jackson witness an accident, they must work together; Callie and Arizona work on their relationship.

Meredith and Cristina bicker about their careers; Bailey talks to Ben about him moving back to Seattle; Shane puts himself in a risky situation; Derek receives a life-changing phone call.

The doctors are faced with the consequences of the events at April's wedding; Alex reacts to the news about his father; Callie and Arizona make a decision about their relationship.

Couples panic when the hospital announces a nonfraternization policy; Owen and Emma discuss the future; Meredith and Cristina have some girl time; Richard asks the residents for help with a rare cancer case.

Arizona's bad day escalates when she advises a patient on a potential double amputation; Derek breaks a promise; Stephanie and Jo find an abandoned baby; the nonfraternization rule leads to a suspension.

Bailey asks Richard to join her on the case of a lifetime; Meredith decides to hire a research assistant; Callie shocks Derek; a young pregnant woman (Keke Palmer) needs Shane's help.

Cristina thinks about her future; a patient decides whether to live or not.

The doctors are exposed to flu-infected patients; Derek prepares to give a speech; a new doctor gives Alex a glimpse into an alternative medical practice.

Cristina won't let herself get excited when she is nominated for a Harper Avery award; Alex thinks about making a change; Callie and Derek work with a machine that recognizes emotions.

Cristina enlists Meredith to help her prepare an acceptance speech for her possible Harper Avery win and while Owen offers to attend the ceremony with her, she insists on going alone. Meanwhile, Derek feels overwhelmed between his responsibilities at home and at the hospital. April and Jackson come to a disagreement on children and religion, and Callie and Arizona try to reconnect in their marriage.

Jackson is given the daunting task of delivering disappointing news to the doctors. Meanwhile, Derek's sister Amelia drops by for a surprise visit, Richard surprises Catherine in Boston and when Bailey gets frustrated by the slow pace of her research, she makes a risky decision.

Cristina looks to Meredith for advice as she assesses her future at the hospital. Derek and Amelia work together on a difficult surgery involving conjoined twins. Meanwhile, Jo is spread too thin when she tries to work on several cases at once and Stephanie realizes the truth about Bailey's bubble boy case.

With Derek away, Meredith spends time with Amelia and finds out her true feelings about her time in Seattle. Bailey deals with the ramifications of her actions and Callie receives devastating news. Meanwhile, the residents panic after hearing that one of them will be fired.

On the season ten finale, the doctors of Grey Sloan Memorial Hospital bid an emotional farewell to the beloved Cristina Yang. A possible act of terrorism rocks Seattle and causes chaos at the hospital. Meanwhile, Meredith makes a life changing decision and one doctor receives shocking news.

On the season eleven premiere, with Cristina gone, a new doctor, Maggie Pierce, making the rounds, and Derek wanting to move to Washington DC, Meredith struggles to regain a sense of normalcy both at home and in the hospital. Meanwhile, Callie and Arizona come to a decision about surrogacy, Amelia overhears a big secret, Bailey realizes she will have to fight Alex for Cristina's board seat and a freak accident causes two teenagers to be caught in a very compromising position.

In this Maggie centric episode, she continues to try to make a positive impression at the hospital but finds herself in extremely unfortunate situations. Meanwhile, Richard continues to hold onto his secret and the doctors work with a dying woman who is being kept alive by her daughter.

Owen introduces Callie to the Veterans Hospital patients in hopes that she will help them with her robotic limb lab, Jo becomes jealous of Alex and Meredith's friendship, and Maggie continues to confide in Richard. Meanwhile, Alex and Bailey prepare to go in front of the board.

Secrets from Ellis Grey's past come to light when Meredith watches old videos and reads through her mother's journals. Meanwhile, Maggie rocks the hospital with an unexpected announcement; Alex gets new responsibilities and Callie focuses her attention on the Veterans' project.

In this Callie and Arizona centric episode, the couple takes a look into the problems that have contributed to their troubled marriage. At work, Callie immerses herself in the Veterans' project, and Arizona struggles to impress Dr. Herman. Meanwhile, Richard leans on Bailey for advice.

Owen becomes invested in a patient when he realizes she may have served in the military, April's mother pays her daughter a visit and bonds with Jackson, and Derek plans a family dinner. Meanwhile, a patient's diagnosis causes Bailey to reconsider her own health issues and Dr. Herman drops a bombshell on Arizona.

Secrets about Amelia's past addictions come to light and cause problems for her at the hospital; Bailey oversees Jo's first solo surgery; and Arizona must make an executive decision in Dr. Herman's absence.  Meanwhile the doctors spring into action when a couple arrives at the emergency room after escaping a fire.

Maggie and Meredith disagree with Derek about the best way to approach a patient's case, which leads to a bigger argument between the couple. Meanwhile, Callie feels responsible when one of her veterans is pushed too far and one doctor's routine procedure results in a devastating diagnosis, on the winter finale.

As Derek prepares for his move to DC, Meredith keeps herself busy at the hospital. Meanwhile, Jackson and April deal with difficult news, and Arizona and Amelia discuss how to best approach Dr. Herman.

April stays optimistic as Arizona begins testing on her baby; Dr. Herman plans out a crash course in fetal surgery; and Owen and Callie encourage each other to get back into the dating scene. Meanwhile, Meredith, Maggie and Bailey use the 3D printer to gain a better understanding of their patient’s tumor.

After several discussions with Dr. Herman, April and Jackson must face their situation head on and make a difficult decision regarding their unborn child. Catherine arrives in Seattle and bumps into Richard at the hospital. Meanwhile, Meredith tries to find someone to take care of the kids so she can visit Derek for the weekend, and Amelia shows Stephanie some tough love when they work together on a case.

Maggie gets upset when Meredith dodges her questions about DC; Bailey and Ben become concerned about Ben's brother after he is admitted to the hospital, and Dr. Herman starts to warm up to Arizona. Meanwhile, Richard feels manipulated by Catherine.

The hospital doctors become fascinated with Dr. Herman's case when Amelia gives a lecture detailing the intricacies of the surgery. Arizona and Herman continue to bond over the amount of cases they are trying to complete before the big surgery. Meanwhile, Bailey brings them a case of a pregnant woman who is close to her heart.

In this Amelia-centric episode, Amelia engages in the surgery of a lifetime as a crowd of doctors look on from the gallery. With Stephanie by her side, she begins operating on Dr. Herman, but quickly realizes it's far more difficult than she anticipated. Meanwhile, Bailey becomes skeptical when Arizona takes on one of Herman’s cases.

An earthquake shakes the ground at Grey Sloan Memorial Hospital, trapping Maggie in an elevator and threatening Meredith's long streak of successful surgeries. Meanwhile, Owen gives medical advice to a child over the phone and Ben confides in Jackson.

A patient's condition sparks a conversation between Richard and Maggie about Alzheimer's disease; April and Jackson struggle to return to their normal lives and Arizona is faced with the reality that Callie is moving on. Meanwhile, Meredith reveals her biggest fears about Derek.

Meredith, rattled by the latest events, tries to figure out what to do about Derek. Meanwhile, Owen is shocked when his mother is admitted to the hospital.

A school field trip to the hospital takes a dramatic turn when the kids witness two injured cops enter the emergency room. Meanwhile, Stephanie sets her eyes on one of the chaperones, Callie operates on the leg of the police captain and Amelia must face her feelings for Owen.

Upon realizing that Owen and Amelia have been seeing each other behind her back, Meredith comes down hard on her sister-in-law causing Amelia to rethink things. Meanwhile, Catherine springs into action when a man is brought into the hospital after his wife seeks revenge on his cheatings ways.

A small plane crash in Seattle causes multiple casualties and brings back horrible memories for the doctors, especially Meredith and Arizona. Meanwhile, friction between Owen and Amelia makes for an uncomfortable working situation for Stephanie.

Derek witnesses a horrible car accident and springs into action to save lives.

Jackson struggles to understand April's decision. Ben and Bailey discuss their future, a patient revisits Callie, and Amelia tries to deal with her past.

The doctors of Grey Sloane Memorial Hospital are forced to put their emotions aside when a catastrophic event occurs.

In the season finale, as the doctors continue to tackle an unfathomable crisis, they are reminded of what is important and brought closer together.

Seattle Grace Hospital springs into action to save the lives of two young girls whose powerful story forces some of the doctors to revisit the effects of bullying on their own pasts. Meanwhile, Meredith adjusts to changes at home with her new roommates while Bailey continues to fight for the Chief of Surgery position.

The pressure is on as a determined Bailey tackles her first day as Chief; meanwhile, April's marriage is in jeopardy and she finds herself unable to address her problems; Meredith struggles to juggle all her responsibilities and Amelia works to define her relationship with Owen.

Maggie reevaluates her life choices after receiving an invitation to her ex-boyfriend's wedding; Richard questions Bailey's loyalty, and Jo confides in Stephanie about a secret she's been keeping from Alex. Meanwhile, Alex struggles with making a difficult decision that will affect the lives of newborn twins.

Owen suggests the interns learn a vital lesson on how to break bad news to patients' families, and Arizona's 90-year-old patient reassures her that she's destined to find love again.

In the midst of the sisters' dinner party, Maggie ditches her cooking duties to rush to the hospital. Meanwhile, April steps in to help cook as an attempt to avoid Jackson, and Arizona nervously waits to find out more about Callie's new girlfriend.

Grey Sloan Memorial welcomes a new transfer resident, and also a patient who's the topic of conversation after accidently sending his sex tape to his entire congregation. Meanwhile, Richard wrestles with how to progress his relationship with Maggie when an old friend visits the hospital, and April brings in a case of a young boy from the Middle East.

The team of doctors work on a high stakes case of a long time patient, adding additional pressure to an already tense environment. Meanwhile, Bailey wants Ben to kick out their new roommate, and Arizona is eager to get back into the dating world with a new wingman.

As the rumor mill around the hospital continues to spiral out of control, Grey Sloan Memorial is flooded with injured firefighters from a nearby wildfire. Maggie struggles to keep things with Andrew professional at work; meanwhile, Jo questions Alex's priorities.

Meredith is brutally attacked by a patient, and Penny is the one who discovers her. The doctors of Grey Sloan Memorial rush to stabilize Meredith and remain by her side in the harrowing aftermath.

As the hospital deals with Meredith's trauma, Callie and Maggie perform a risky, experimental surgery on Alex's 15-year-old patient against his professional opinion. Meanwhile, Owen and Nathan are still at odds with each other, and Maggie and Andrew's relationship continues to develop.

The evolution of April and Jackson's relationship is revealed through a series of flashbacks dating back to when they first met. Simultaneously, we follow the years-long progress of one of Jackson's patients.

A patient from Meredith’s very first surgery as an intern is readmitted to Grey Sloan Memorial with a new aneurysm, and Amelia takes her case. Meanwhile, Maggie suspects that Richard knows about her relationship with Andrew.

The Grey Sloan doctors travel to a military hospital to perform a risky surgery on a veteran with an advanced tumor. Meanwhile, Andrew is tired of being Maggie's worst kept secret; Ben makes an impulsive surgical decision; and a team of cheerleaders wreak havoc in the ER.

Richard throws everyone for a loop when he switches the resident and attending pairings, and Arizona takes a huge risk on a woman who is pregnant with quadruplets. Meanwhile, April is faced with a difficult decision.

Jackson learns about April's pregnancy, while Alex and the team of doctors handles an hours-long, triple-organ transplant surgery. Meredith considers dating again, and Andrew insists on not receiving special treatment after he and Maggie go public.

Meredith takes a step forward with Will but quickly regrets it, while Maggie senses a disconnection with Andrew. Meanwhile, Amelia reevaluates her relationship with Owen, and Catherine comes to town and shakes things up with April and Jackson.

Meredith goes on an ambulance ride with Owen and Nathan to pick up a heart for a transplant patient. Musician & MS patient Kyle Diaz is admitted to Grey Sloan Memorial with a tremor in his hand. Meanwhile, Catherine continues to insert herself into Jackson and April's business against Richard's wishes.

After a missing child forces the hospital into lockdown, Ben decides to operate on a pregnant mother without the proper surgical equipment. Miranda, as Chief, is faced with the repercussions of the event and whether or not Ben's actions were justified.

Miranda continues to deal with the aftermath of Ben's reckless decisions and forms an advisory committee to recommend proper disciplinary action. Meanwhile, April and Jackson try to put their differences aside for the sake of their baby, and Arizona makes a decision that could affect her relationship with Callie forever.

The doctors work frantically to save a young boy who was accidentally shot. Meanwhile, Arizona is upset when Callie tries to make an important decision about Sofia's future without consulting her.

Stephanie's relationship to Kyle becomes complicated. Meanwhile, Meredith encourages Amelia and Owen to choose to be a real couple. Arizona and Callie are at odds and put their friends in the middle of an uncomfortable situation.

Callie and Arizona are at odds over Sofia's future, and Stephanie questions the status of her relationship with Kyle. Meanwhile, Alex and April work on a pregnant teen that is readmitted to Grey Sloan Memorial.

Owen and Amelia take their relationship to the next level. Alex gains some clarity on his future with Jo, and Callie and Arizona continue to struggle with the current custody arrangement.

Meredith and Maggie support Amelia on an important day. Jo reveals she has been keeping secrets from Alex, while Arizona and Callie deal with the impact of their custody arrangement. Meanwhile, Ben leaps into action to help a friend.