Overview: Trick R' Treat with the Pawn Stars as Corey and Chumlee try to pull off the perfect duo Halloween costume. Can they be counted on to work as a team? Then, when Corey checks out a 1933 Plymouth, the Old Man tries to edge in on the deal. And later, a guy brings in a 1977 Mattel Electronic Football Game. A relic from Rick's childhood, can he separate business from nostalgia?