Season 4 Episode 16 episode 16

'Castle' Season 4 Episode 16 “Linchpin” 4 Sneak Peeks

'Castle' Season 4 Episode 16 “Linchpin” 4 Sneak Peeks

ABC has released 4 sneak peeks for the explosive conclusion of Castle's two-part story arc, “Linchpin”. Check them out and sound off with your thoughts!!