Rizzoli & Isles

In the season premiere, a community parade turns deadly and family tensions and politics arise. A surprise visit from Lt. Col. Casey Jones (CHRIS VANCE) reveals shocking news.

While investigating the homicide of an overzealous journalism student, Jane is not happy when a former colleague (recurring guest star AMAURY NOLASCO -- Prison Break) returns to the Boston Police Department as the new lieutenant of the drug unit. But the murder Jane is investigating soon forces her to deal with him — and the event in the past that wrecked their relationship. Meanwhile, an alarming tip from Cailin (recurring guest star EMILEE WALLACE) causes Maura to investigate Hope (recurring guest star SHARON LAWRENCE).

Baby TJ's christening turns grim when a body is discovered in the church. Jane almost abuses her power in order to protect her brother Tommy (recurring guest star COLIN EGGLESFIELD) when Lydia's fiancé, Stuart Stawbridge (guest star JAREB DAUPLAISE -- Mad Men) threatens to take custody of TJ, and budget cuts cause tensions to run high around the department.

Maura becomes the key suspect in a homicide case when Maura's date turns up dead — and Maura can't remember their evening together. As the shocking evidence against Maura piles up, Jane struggles between protecting her best friend and doing her job.

On the first day of Paddy's (recurring guest star JOHN DOMAN -- Borgia, Damages, The Wire) murder trial, Maura gains insight into her father from Hope (recurring guest star SHARON LAWRENCE). Korsak opens up about Cavanaugh's tragic past. And in an unexpected twist, Maura must decide which side she's on when she and Jane unravel a shocking secret about Paddy and Hope that affects them all.

When a beleaguered Jane spills hot coffee on a stranger, a viral video of Jane's bad day potentially jeopardizes her career and reputation. Meanwhile, the squad rushes to solve a puzzling murder case involving a conspiracy theorist.

A popular high school teacher is killed in a hit and run that is clearly no accident. The squad works to solve the case, but Jane is preoccupied with Lt. Martinez's (recurring guest star AMAURY NOLASCO) apparent favoritism towards his own drug unit.

Frankie Jr. is brought in to help with a gruesome murder case involving a youth hockey league. Frustrated with Hope (recurring guest star SHARON LAWRENCE), Cailin (recurring guest star EMILEE WALLACE) asks to stay with Maura. But Maura quickly learns that living with her younger half-sister requires skills she does not have.

When Jane and Maura are asked to present the case of serial killer Charles Hoyt at a symposium for law enforcement, Jane worries that her greatest challenge will be facing bad memories. However, as she and Maura begin a simulation of investigating Hoyt's murders, they soon come across a horrifying discovery. In a matter of moments, the team finds themselves drawn into a lethal game of cat and mouse with a new and terrifying serial killer.

When a late-night amateur drag race turns deadly, the squad works quickly to solve what turns out to be a particularly dangerous case. As evidence unfolds, Jane suspects that the motive for murder may have been an attempt to conceal drug trafficking. However, when she turns to Lt. Martinez (recurring guest star AMAURY NOLASCO) for help he seems to be thwarting her investigation.

A mock trial advisor (guest star A'DA ALISON WOOLFOLK -- Franklin & Bash) dies tragically during a competition. Meanwhile, Angela's increased interest in selling brownies has Jane concerned that she may be hiding financial issues. And Tommy (recurring guest star COLIN EGGLESFIELD) hires a lawyer (guest star CHRIS COPPOLA -- Beowulf) to settle his claim against the Storrow Center. DOUG SAVANT (Desperate Housewives, Melrose Place) also guest stars as a mock trial advisor, a colleague of the woman who dies.

In the summer finale, the squad rushes to solve a violent homicide case muddied by conflicting evidence. Maura is burdened with the major decision of whether to take in her recently paroled grandfather (guest star RICHARD HERD -- Seinfeld, T.J. Hooker). Meanwhile, Jane and Casey (recurring guest star CHRIS VANCE) are forced to decide between their careers and their romantic relationship.

When a kidnapper who dresses as a clown reemerges in Boston after more than 20 years, the squad is struck with fear. Desperate for clues, they dig through files from the unsolved abductions of the haunting "Summer of the Clown" in 1988. Meanwhile, as Jane's relationship with Casey (recurring guest star CHRIS VANCE) becomes more serious, they are forced to face the fact that one of them will have to compromise if they are to take things to the next level. Maura also finds herself in a dilemma when she inadvertently gets in the middle of another relationship.

A singer and guitar player is brutally and mysteriously stabbed in a bar. As details emerge in the case, the squad soon realizes that the victim had something to hide. Meanwhile, Jane's dad (recurring guest star CHAZZ PALMINTERI) returns after being gone for more than a year ... and he's got some shocking news.

When a food truck chef dies suddenly, all signs point to a suspicious poisoning, but many questions remain unanswered. Meanwhile, Tommy (recurring guest star COLIN EGGLESFIELD) announces some big plans that have Angela very excited. And Maura's birth mother, Hope (recurring guest star SHARON LAWRENCE), takes a bold step toward making amends with her daughter.

Homeland Security steps in when a senator's daughter is found murdered. The squad rushes to solve the case, which could put national security at risk. Meanwhile, Tommy (recurring guest star COLIN EGGLESFIELD) and Frankie get into a fight after Tommy starts slipping back into bad old habits. And Jane reveals some shocking news that could change her life forever.