Dexter is caught up in a very personal case that awakens the needs of his Dark Passenger. Debra feels overwhelmed by her new Lieutenant duties, made all the more complicated when she finds out Quinn slept with a witness in the Doomsday case.

Jane and company investigate the murder of a man and his wife, on their way to his fifteen year high school reunion where, clearly, the attendees haven't changed all that much.

Provenza gets in trouble for losing evidence.

A missing teen with a violent past puts the squad on alert.

The death of a family member motivates the squad.

A deadly house party leads the Intelligence Unit to uncover a family's alarming secret. Atwater faces a personal turning point.

Provenza gets in trouble for losing evidence.

A missing teen with a violent past puts the squad on alert.

The death of a family member motivates the squad.

A deadly house party leads the Intelligence Unit to uncover a family's alarming secret. Atwater faces a personal turning point.

When a school shooting breaks out during the investigation of a tattoo, the team splits up to take down the shooter. Mayfair, meanwhile, copes with some issues from her past.

Jane and company investigate the murder of a man and his wife, on their way to his fifteen year high school reunion where, clearly, the attendees haven't changed all that much.

Provenza gets in trouble for losing evidence.

A missing teen with a violent past puts the squad on alert.

The death of a family member motivates the squad.

A deadly house party leads the Intelligence Unit to uncover a family's alarming secret. Atwater faces a personal turning point.

When a girl with a tattoo connection falls into Borden's care, he brings her case to the FBI team - but her ties to a terrorist organisation prove dangerous for all. Meanwhile, a conflicted Jane grows closer to Weller, and friendship blooms between Borden and Patterson.

Jane and company investigate the murder of a man and his wife, on their way to his fifteen year high school reunion where, clearly, the attendees haven't changed all that much.

A Hollywood hairstylist is murdered. Brenda's folks show up.

A double-homicide in Tijuana points to police corruption.

The squad tries to stop an explosive massacre.

A horrific car accident puts a family's fate in the hands of the Gaffney staff. Ripley questions Lenox and her increasingly reckless behavior.

Dexter finds himself teamed up with a fellow Dark Passenger when he takes a road trip to Nebraska to tie up some loose ends from the past. Meanwhile, Debra deals with the complications of her promotion as she leads the Doomsday investigation.

While Dexter uses lessons he learned from Brother Sam to follow up on some new leads in the Doomsday investigation, Debra butts heads with Captain LaGuerta over the case of a dead call girl.