Richard "Rick" Castle is a millionaire playboy who recently killed off his main character when a serial killer starts killing people like he does in his books. He teams up with New York police detective Kate Beckett to solve the case. He finds inspiration in Detective Beckett and starts shadowing her for his next book.
She's armed, he's dangerous. (Season 2)
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Did You Know?
Only his mother ALWAYS refers to Castle as "Richard". She's also the only one who regularly calls Beckett "Katherine". See more
To obtain reluctant witnesses' cooperation, Castle will occasionally offer to name a character in his Nikki Heat books after them, often right in front of Beckett, or Ryan and Esposito. While it might appear to be a harmless offer, any competent defense attorney could paint it as bribery and witness tampering, which are both illegal; as cops, they don't seem bothered by an action that could potentially get a solid case against a suspect thrown out at trial. See more
[whatever Castle has done