When Nikita goes to a small town after one of Percy's black boxes, she is shocked to find the guardian of the box has abandoned her post and is attempting to live a normal life.

When Dr. Alicia Seberg, a government research scientist, is exposed to a deadly toxin while at work and has only hours to live, she calls Patrick Jane and the CBI to find her murderer.

Patrick and the CBI team investigate the murder of a tutor, and find a mysterious little red box near the body, starting a chain of events that turns the murder into the search for a priceless ring stolen from the British Museum.

Hannah treats a woman whose undiagnosed condition threatens the lives of both her and her unborn child. Goodwin receives a chilling message while battling the hospital higher-ups.

A familiar face returns to the E.D. Ripley and Charles treat a woman with a rare disorder. Frost suspects that his patient’s father is lying about his daughter’s condition.

When Dr. Alicia Seberg, a government research scientist, is exposed to a deadly toxin while at work and has only hours to live, she calls Patrick Jane and the CBI to find her murderer.

Patrick and the CBI team investigate the murder of a tutor, and find a mysterious little red box near the body, starting a chain of events that turns the murder into the search for a priceless ring stolen from the British Museum.

Hannah treats a woman whose undiagnosed condition threatens the lives of both her and her unborn child. Goodwin receives a chilling message while battling the hospital higher-ups.

A familiar face returns to the E.D. Ripley and Charles treat a woman with a rare disorder. Frost suspects that his patient’s father is lying about his daughter’s condition.

With the help of an old academy buddy, Stabler goes rogue in the hunt for Emery; using OCCB allies when he can, Stabler must face the truth behind revenge, with one last assist from Joe.

A month after Voight’s close brush with death, Intelligence is overwhelmed with cases as they catch a high-stakes drug bust.

When Dr. Alicia Seberg, a government research scientist, is exposed to a deadly toxin while at work and has only hours to live, she calls Patrick Jane and the CBI to find her murderer.

Patrick and the CBI team investigate the murder of a tutor, and find a mysterious little red box near the body, starting a chain of events that turns the murder into the search for a priceless ring stolen from the British Museum.

Hannah treats a woman whose undiagnosed condition threatens the lives of both her and her unborn child. Goodwin receives a chilling message while battling the hospital higher-ups.

A familiar face returns to the E.D. Ripley and Charles treat a woman with a rare disorder. Frost suspects that his patient’s father is lying about his daughter’s condition.

With the help of an old academy buddy, Stabler goes rogue in the hunt for Emery; using OCCB allies when he can, Stabler must face the truth behind revenge, with one last assist from Joe.

A month after Voight’s close brush with death, Intelligence is overwhelmed with cases as they catch a high-stakes drug bust.

When a "Jane Doe" with amnesia and covered in blood steps in front of Cho and Van Pelt's car, Patrick Jane must use all of his skills to discover who she is, her last location and why she lost her memory

When Patrick Jane's sneaky conduct causes the case of a confessed hitman to be tossed out of court, his annoyed CBI team must start the investigation over from scratch.

Halloween chaos takes over the E.D. Hannah helps a pregnant woman with an autistic son. Charles clashes with nurse Jackie on a psych case.

Chicago P.D. steps up Goodwin’s security after she’s threatened online by a former employee. Archer and Frost treat victims from a disciplinary camp injured during a rockslide. Maggie gets roped into delivering a high schooler’s baby.

The shocking murder of Lin & Megan Russell and the media frenzy surrounding Kent police's year-long hunt for a suspect.

Officers excavate the crawlspace beneath Gacy’s home; Gacy shows where he disposed Rob's body.

Michael sends Nikita in to save the last person on the list of black box protectors, a CIA cryptographer named Malcolm.