Preview Clip: Rick Gets a Dose of Reality in Castle Season 4, Episode 21: “Headhunters” (VIDEO)
You're not in Kansas anymore, Castle. Makes working with Kate Beckett kinda seem like a walk in the park, doesn't it?
Original Air Date: Castle Season 4, Episode 21: "Headhunters" airs on Monday, April 16, 2012 at 10 p.m. ET on ABC