CASTLE – Episode 4.16 – Linchpin – Promos

Stana Katic and Nathan Fillion in CASTLE - Episode 4.16 - Linchpin

Promo images and preview clips for CASTLE, episode 4.16, “Linchpin”.

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 Jennifer Beals, Nathan Fillion, Stana Katic, Josh Stamberg, and Jade Carter.

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