John must work with an enemy to take down a terrorist who stole nuclear warheads and kidnapped a scientist to activate them. Meanwhile, Natalie and Malcolm try to protect John's identity from the FBI.moreless
Laurie works on a book to expose the evils of the Guilty Remnant, and rents office space to serve as a refuge for individuals fleeing the cult, while Tom goes undercover in the silent sanctuaries to rescue lost souls from its clutches.moreless
A sniper targets the Federal Building lobby, putting Moretti and Donnie in the crosshairs. Before long, Pierce concludes that the shooter fears low-frequency radio waves. Meanwhile, a beguiling woman prompts Donnie to run for office.moreless
The rich and famous may have met their match when Jane breaches an elite men's-only social club in order to find the killer of a woman who was found dead nearby.
The medical staff at Bill Barnes Extended Care Unit deals with a patient that has passed, a fecal sample from an unknown origin, and attempt to help a patient that only speaks the language Khmer.moreless
When a Hollywood producer and his starlet breeze into the Savoy, Dixon is hired to keep an eye on her.
In one reality, Michael sits in a holding cell hoping that Bird can clear his name, while in the other the police force hunts the wounded detective down. But in the final confrontation, Michael may face his greatest enemy: reality.moreless
Quinn finds herself in a serious problem and only Olivia can help her. Meanwhile, Cyrus also requires Olivia's help after a possible blow to Grant's credibility.
Michael learns of the conspiracy behind the accident that killed his family and goes after Detective Hawkins in both realities. The Birds in both reality have to choose who to believe as well, and one of them will pay the price.moreless
In one reality, Michael investigates a gang-related shooting but indicators in the other reality suggest everything isn't what it seems. In the other reality, Hannah helps Emma, Vega plans Michael's going-away party to Oregon, and Captain Harper realizes that the situation with Michael isn't going away as neatly as she hoped.moreless
Michael returns to a case that he was working on prior to the accident, giving Captain Harper cause for concern. Meanwhile, Michael and Vega work an old homicide case and Dr. Lee provides an assist while Hannah prepares for the move to Oregon. And in the other reality, Michael and Bird investigate a suicide and Evans gives Michael some advice about whether he should go with Hannah.moreless
While trying to cope with the grief of his son and wife in the two alternate realities, Michael gets a clue to the murder of a homeless man in one reality and tries to use it to find the suspect in the other reality. Meanwhile, Michael's captain begins to question his sanity as the events of the car accident come into question.moreless
While doing some investigative work at a New York mansion, a prominent ghost hunter is murdered. Castle and Beckett must figure out if paranormal activities are to blame.
Eli comes back to work reinvigorated after scattering his father's ashes in the Himalayas, andtakes a case which involves a married couple seeking compensation from a produce manufacturer for causing infertility.
When a juror in the trial of an infamous mobster is found dead, Brenda and the Priority Homicide Division find that their involvement in solving the case may be affecting the jury's final decision.
Complicating her personal life, Brenda faces another new challenge: a surprise visit from her mother.