Castle2009 | TV Show
A murder-mystery writer and a detective team up to catch a serial killer who is reenacting murders from his books. Once the case is solved, the unlikely pair continue to work together to probe New York City's most unusual homicides.
Premiered: March 9, 2009
Season 4, Episode 23 Always
First Aired: May 7, 2012
In the fourth-season finale, a military veteran's homicide leads Beckett to go after the man who shot her, and a concerned Castle wants to protect her from the danger she's facing.
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