When a seller brings in an antique key gun, can the Pawn Stars unlock the mystery behind it? Meanwhile, Rick strikes gold...records, when a Pink Floyd album spins into the shop. Next, a rare 1600s blade slices its way into the hands of the guys. Can Corey's negotiation cut through? Then, Chum and Corey give peace a chance in a vintage bus. Will they ride off into the sunset, or will the wheels fall off this deal? Finally, can Rick score a Jackie Robinson card collection that's the best thing since sliced bread?