Season 4, Episode 19 47 Seconds
First Aired: March 26, 2012
Five people are killed in a bomb explosion at a protest rally, and Castle and Beckett try to uncover who planted the deadly device by focusing on the crucial seconds prior to the blast.
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- Premiered: March 9, 2009
- Rating: TV-PG
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- Premise: Successful mystery novelist Richard Castle starts working with the New York Police Department (NYPD) homicide investigation team after a serial killer decides to use plots from his novels for no good. (more)