In the explosive conclusion of a two-part story arc that began last week with "Pandora," Castle & 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.

Starring:

Jon Huertas, Nathan Fillion, Ruben Santiago-Hudson, Seamus Dever, Stana Katic, Susan Sullivan, Tamala Jones

Genre:

Comedy, Drama, Short