An interview with a federal law enforcement agency forces Beckett to reconsider her career and her relationship with Castle; a young woman's body is found inside a flop house's water tank.
When a government whistleblower is murdered, Beckett and Castle must figure out who is responsible and determine why Homeland Security is trying to take over the case.
When Beckett steps on a pressure-sensitive bomb, the team searches for a way to save her while Castle distracts her by talking about their relationship.
When Beckett is tasked with protecting a charming billionaire whose life is in danger, she reflects on her relationship with Castle; consumed with jealousy, Castle tries to solve the case as quickly as possible.
Beckett and Castle discover giant footprints at the site of a vicious murder, leading the team to wonder if Bigfoot is the killer.
Castle believes he witnesses a murder in the apartment across the street.
A body is discovered in an industrial cake mixer.
Castle and Beckett tackle one of their creepiest cases yet.
Castle learns his daughter's kidnapping may be part of a larger agenda.
A murder investigation reveals a plot to kidnap a businessman's daughter.
The young rising star of "The Wives of Wall Street" is murdered.
Castle discovers evidence that links a young woman's murder to a Senator.
When the founder of an adult video franchise is murdered.
Castle and Beckett are thrust into New York's raucous music industry.
Angry ex-husbands come under suspicion when a divorce attorney is murdered.
The team must solve a case involving a dead Santa who falls from the sky.
By popular request, here is the never before seen scene from 'Boom!'
Castle & Beckett face new questions about their relationship. The fun and conflict escalate as the crime-solving dynamic duo navigates a whole new chapter in their lives.
Castle decides he wants more.
Castle asks what that says about their relationship.
An incredible, life-altering opportunity is put on the table.
It's the beautiful final moment for Caskett.
Lanie and Esposito kiss.