Neal gets a taste of what his ideal life in New York might be like when he is assigned to work a case with his ex-girlfriend, Sara Ellis.

When Castle and Beckett investigate the killing of a treasure hunter, they discover the case is linked to a mysterious homicide from 1947 involving a hard-boiled private detective. Castle realizes…

Lily asks for her father's help when she and Marshall decide to throw a housewarming party. Marshall's boss gets under Ted's skin and the two nearly come to blows, and…

Jeannie has to take charge of the Pod when the racist CEO of a motel chain has reservations about dealing with Marty. Meanwhile, Clyde hopes to hit it off with…

Over Here Astrid gets an unexpected visit from her Alternate, while Peter and Olivia track a killer using a toxin that has yet to be invented. Both universes collide in…

Jane and the CBI narrow down the list of suspects after a disgraced clothing designer on the verge of a comeback becomes a fashion victim. Meanwhile, FBI Agent Darcy continues…

When Elizabeth overhears one of her neighbors in a suspicious conversation, her curiosity leads Peter and Neal to uncover a robbery plot against a posh Manhattan Hotel.

With her investigation complete, Wendy presents her evidence against Will to the grand jury in hopes of sending him to prison for bribery. Eli and Stacie Hall square off once…

With Jeremiah out of town, Marty is forced to bring his son Roscoe to his next job in San Francisco; hoping for some quality time with his dad, Roscoe ends…

Olivia continues to cope with the ominous warning from the Observers, while Peter and the team track a girl with the mysterious ability to predict death.