Season 5, Episode 23 The Human Factor
First Aired: May 6, 2013
A whistle-blower is killed and the crime scene gets sealed by Homeland Security. As Castle and Beckett continue to pursue the case, they learn that the cause of death was not a car bomb but a missile from a military drone.
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- Premiered: March 9, 2009
- Rating: TV-PG
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- 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)