As time dramatically ticks down, Peter, Olivia and Walter stop at nothing to save the universe from Observer rule. Walter enters the infamous deprivation tank in an attempt to uncover a key piece of information about the mysterious figure, Donald. Meanwhile, Captain Windmark sets out on a revealing mission of his own as long-standing questions are answered.
Sherlock is reunited with “M.” a British criminal who appears to have followed Sherlock to New York. Meanwhile, Joan has reservations about leaving Sherlock and taking on a new client.
With Huck being held under the Patriot Act, Olivia and the team get unexpected assistance from an old friend. Meanwhile, Olivia helps Mellie out of a very compromising situation that could affect Fitz’s future, and her relationship with Edison reaches a boiling point.
Jay and the family plan to celebrate New Year’s together at a hotel in Palm Springs, but the hotel doesn’t meet their expectations; Alex and Haley are faced with challenges as they try to watch the kids back at home.
Axl feels embarrassed when he and Sue are asked to work on a school project together; Brick’s school therapist (Dave Foley) tries to help him make friends.
When a powerful divorce attorney who only represented women is murdered, Castle and Beckett are confronted with a plethora of angry ex-husbands, any one of whom could be the murderer. Meanwhile, Castle’s ex-wife (Darby Stanchfield), Meredith, moves into the loft to take care of Alexis while she recovers from Mono, and to make matters worse, Beckett is also forced to move in while her apartment is being fumigated, causing tension, humor and more than a little awkwardness.
Louis Canning’s attempts to delay a deposition could complicate Will’s latest and potentially lucrative case. Diane and Will have a face-off with Clarke.
The CBI team visits a high-end California rehab center in order to investigate the death of a young model who was a patient there, while Lisbon ramps up her investigation into Tommy Volker.
Sherlock and Joan investigate the murder of the general manager of a high-end Manhattan hotel whose body is found inside an industrial laundry machine. Meanwhile, since Joan’s time with Sherlock is almost up, he offers her an apprenticeship.
Sherlock and Joan investigate the murder of the general manager of a high-end Manhattan hotel whose body is found inside an industrial laundry machine. Meanwhile, since Joan’s time with Sherlock is almost up, he offers her an apprenticeship.