Castle and Beckett are thrust into the world of high fashion.
The murder of a video store clerk with a secret history leads the team to Castle's father.
Castle and Beckett suspect a serial arsonist of murder; Jenny goes into labor.
Beckett races to find a stolen toxin capable of killing thousands of people; Castle has less than 24 hours to live after being exposed to the chemical weapon.
Beckett and Castle face the consequences of their decisions during a high-stakes investigation.
Castle: '3XK' Sneak Peek
Castle - 'TICK, TICK, TICK...'
Feel the bitter sting of defeat.
Castle - Sneak Peek
Moderator and TV host Tom Bergeron asks series creator/executive producer Andrew W. Marlowe how he created "Castle." Cast member Nathan Fillion (Richard Castle), director/executive producer Rob Bowman, and Stana Katic (Kate Beckett) talk about auditions.
Cast members Molly Quinn (Alexis Castle) and Seamus Dever (Kevin Ryan) say Nathan Fillion (Richard Castle) is most like his character. Tamala Jones, Ruben Santiago-Hudson, and Jon Huertas talk about their roles.
Castle: 'A Deadly Game'
Nikki Heat: Sneak Peek
Beckett finally gets justice for her mother's murder.
Significant Others - Sneak Peek
Castle sneak peek.
Castle: 'Close Encounters of the Murderous Kind' Sneak Peek
Castle sneak peek
Castle: Season Premiere clip
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