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World famous mystery writer Richard Castle finds unexpected inspiration when Detective Kate Beckett questions him about a series of murders that based on his books.
As Rick and Kate's wedding day draws near, a shocking event sends them on a wild run that threatens to ruin their day on the season finale of Castle.
When man whom Beckett was secretly watching in connection to her mother's murder is killed, she and Castle become the target of a manhunt that puts their lives at risk.
Castle and Beckett dive into the world of death defying stunts when a mysterious motorcyclist guns down and up-and-coming skateboarder on Castle.
When the body of an infamous mobster who disappeared in the 1970s is found, Castle and Beckett find one remaining witness. But since he still believes it's the '70s, they must act like his delusion is real in order to find their killer.
When a Wall Street Trader is murdered the investigation is complicated when they find out the victim was a confidential informant for a US Attorney who happens to be Capt. Victoria Gates' estranged sister on Castle.
When Castle and Beckett investigate the murder of a Japanese ballet dancer, they realize that she may have be killed by a ninja, an now they're after Castle.
An undercover Narcotics operation goes wrong for Beckett and she ends up in a battle of wits with some of the most dangerous men of NYC's underworld on Castle.
When a woman confesses to murder, she tells the detectives details only the killer would know, but when someone else confesses with the same knowledge Castle and Beckett realize this case is more mysterious than they originally thought.
The murder of a high school mean girl brings Castle back to one of his many alma maters and face to face with a possible telekinetic killer on Castle.
The murder of a fashion icon's assistant brings to light unexpected obstacles for Rick and Kate's wedding on Castle.