After a serial killer starts displaying the victims the way done in Richard "Rick" Castle's books, Castle teams up with Detective Kate Beckett to solve the case. He then starts to shadow her for his new book
Castle's first case with the NYPD has him and Beckett solving the case of a nanny found dead in a spin dryer
A clique of rich kids plays Russian Roulette with a bullet-less gun. But one night, a bullet in the chamber kills one of them. When another one supposedly commits suicide, it's up to the team to discover what is what and if the suicide was over guilt
Two guys find a rug at a neighborhood dumpster. When they get it home, they were astounded to find a councilman's body inside the rolled up rug. Was this a botched robbery or does this murder have ties to local politics?
A frozen female corpse discovered at a new construction site transforms a cold five-year-old missing persons case into a current homicide investigation
A ritualistic killer is on the loose while Castle's first ex-wife and Alexis's mom, Meredith visits
Castle is anxiously awaiting the public response to the release of his newest work of fiction. A baffling rash of jewel robberies from the society set prompts Castle to ask Beckett to be his undercover date at a ball to see if the thief might be amongst the affluent set and casing out his victims at charity events, balls, and parties
A woman found drowned in a bathtub full of motor oil is initially identified as a missing suburban housewife, until it's discovered that her identity had been stolen from a deceased child, and that she had been a fugitive from a terrorism charge for two decades
A 2-year-old girl is abducted reuniting Beckett with her ex-boyfriend, FBI agent Will Sorensen
A plastic surgeon is found murdered with his fingernails ripped off. Castle looks into Beckett's mother's murder despite her protests