Castle and Beckett Arrive at the Crime Scene in Castle Season 5, Episode 9: "Secret Santa"
When a bearded, rotund man in a red Santa suit with an ID reading Kris Kringle falls from the sky in Central Park, Castle and Beckett are on the hunt to find the person who killed Santa. But everything isn't holiday cheer, as they discover St. Nick may have been more naughty than nice.
Original Air Date: Castle Season 5, Episode 9: "Secret Santa" airs on Monday, Dec. 3, 2012 at 10 p.m. ET on ABC.