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Nathan Fillion stars as Richard Castle, a famous mystery novelist who is initially called in to help the NYPD solve a copy-cat murder based on his novels. Stana Katic stars opposite as the young detective Kate Beckett. Following his encounter with Beckett, Castle decides to use her as the model for his next book series. He uses his contacts and receives permission to accompany Beckett while investigating cases. While technically a drama series, Castle also features comedy and romantic tension.

When a murdered man is found stuffed in the garbage chute of an apartment building and two women arrive to ID his body — one his wife and the other his fiancŽe — Castle and Beckett have their hands full keeping the women from killing each other as they work to peel back the layers of the victim’s double life. Was it a jilted woman, corporate espionage, or a much darker secret that led to his demise?

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The murder of an Assistant District Attorney thrusts Castle and Beckett into the world of ex-cons and escorts. But when Castle’s desire to help a vulnerable call girl endangers the case, Beckett is forced to decide between honoring promises and putting a killer behind bars. Matters are complicated even further when Castle’s daughter shares a potentially explosive secret with Beckett instead of her father.

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Castle and Beckett investigate the hit-and-run death of a bike messenger, brutally murdered to prevent him from delivering a package, the contents of which could free a wrongly convicted man from prison. In a surprising twist, this tragic death is linked to a murder case that Captain Montgomery investigated a decade earlier. To solve the present murder, Castle and Beckett must dredge up the past by uncovering the secrets and scandals of a prominent New York family.

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When an up-and-coming rock star’s dead body is found staged in a scene straight out of her hit music video, Castle and Beckett delve into the world of obsessed fans, sleazy managers and jealous band members. But it’s only when Alexis uncovers the true meaning behind the lyrics of the final song that clues to the killer’s identity begin to surface.

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