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.

Adrian Pasdar on Castle
Watch Castle Season 3 Episode 16
"Setup"
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Adrian Pasdar debuts on Castle this week, playing a federal agent. He's brought in to take over the investigation of a massive conspiracy.

Old Files
Watch Castle Season 3 Episode 15
"The Final Nail"
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Jason Wiles guest stars this week as a former friend of Castle's... and the main suspect in a case. This places Castle and Beckett on opposite sides of the investigation.

Crime Scene Pondering
Watch Castle Season 3 Episode 14
"Lucky Stiff"
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A lottery winner is killed in brutal fashion this week, resulting in a number of suspects. In related news, Martha inherits money she thinks she doesn't deserve.

Startled Duo
Watch Castle Season 3 Episode 13
"Knockdown"
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The lead detective on Beckett's mom's murder cases resurfaces this week. A subsequent investigation leads back to a decades-old conspiracy.

Gilles Marini on Castle
Watch Castle Season 3 Episode 12
"Poof! You're Dead"
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Carrie Genzel guest stars on this episode of Castle. She portrays a former model and the wife of a billionaire. Gilles Marini also plays a key role.

Rick and Natalie Rhodes
Watch Castle Season 3 Episode 11
"Nikki Heat"
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Laura Prepon shows up on this special episode of Castle. It focuses on Castle's book and the actress that will help bring it to the big screen.

Last Call Scene
Watch Castle Season 3 Episode 10
"Last Call"
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A body is found floating in the East River on this episode, which leads Castle and Beckett into old tunnels and passageways of New York City. Once there, the partners find a secret from the days of Prohibition.

A Matter of Abduction?
Watch Castle Season 3 Episode 9
"Close Encounters of the Murderous Kind"
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An astrophysicist is found dead this week, leading to a case that keeps pointing back to the impossible: alien abduction. Lyle Lovett guest stars.

A Fowl Murder
Watch Castle Season 3 Episode 8
"Murder Most Fowl"
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A subway worker is found dead shot to death this week. While working this case, Castle and Beckett uncover the violet abduction of a young boy and must unravel the motives behind this kidnapping.

Beckett at Work
Watch Castle Season 3 Episode 7
"Almost Famous"
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Beckett and Castle respond to an "officer down" call this week and are in for a surprise: the victim is actually a male stripper dressed as a cop. Hot stuff!

Mystery writer Richard Castle is mired in a case of writer's block after killing off the main character of his books. But he finds himself unexpectedly inspired by solving real life crimes with Detective Kate Beckett and even more affected by the detective herself whom he decides to base his new series of novels.

Castle Quotes

Sometimes the hardest things in life are the things most worth doing.

Castle

Castle: How do you know when you're in love?
Beckett: All the songs make sense.