Season 3, Episode 21 The Dead Pool
First Aired: April 11, 2011
A star swimmer with Olympic dreams is found dead in a pool, and crime writers Michael Connelly and Dennis Lehane (appearing as themselves) help Castle dissect the complex case over a game of poker.
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- Premiered: March 9, 2009
- Rating: TV-PG
- Premise: A murder-mystery writer and a homicide detective team up to solve unusual crimes in New York City, and their professional relationship soon crosses the line into romance. (more)