Season 4 Episode 21 episode 21

'Castle' Season 4 Episode 21 "Headhunters" First Look Photos

'Castle' Season 4 Episode 21 "Headhunters" First Look Photos


ABC has released a whole batch of promotional images for the April 16th episode of Castle, "Headhunters". They feature Nathan Fillion's fellow Firefly alum, Adam Baldwin, having a fun reunion.