Season 6, Episode 1 Valkyrie
First Aired: September 23, 2013
In the sixth-season opener, Castle and Beckett deal with the fallout from their personal choices as a high-stakes investigation unfolds.
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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)