Season 4 Episode 16 episode 16

'Castle' Season 4 Episode 16 "Linchpin" Guide

'Castle' Season 4 Episode 16 "Linchpin" Guide


ABC has released the official synopsis for the February 20th episode of Castle, "Linchpin". In this dynamic conclusion to "Pandora", Castle and Beckett are on a serious time table. Jennifer Beals and Josh Stamberg will be guest starring.

  • 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.