Season 4 / Episode 16
In the explosive conclusion of a two-part story, Castle and Beckett race to find the “Linchpin” in order to stop the first domino in a chain of events which will plunge the United States into war.
Genre - Drama/Police/Cop/Comedy/Procedural
Running Time - 43min
Language - en
Original Air Date - Monday 20th February 2012
Official Streaming Services
Disney Plus Canada
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