Crooked gambler Ben Sissle (Vinton Hayworth) intends to get even with Matt Dillon (James Arness) for exposing him as a cheat. To this end, Sissle callously uses feeble-minded Cooter Smith (Strother Martin) as a dupe in a scheme to force Matt into a fatal gunfight. Cooter is persuaded that the whole thing is a "joke", but no one is laughing in the final scene. Featured as one of Sissle's card-playing victims is a young, pre-Man from UNCLE Robert Vaughn. This episode is based on the Gunsmoke radio broadcast of July 27, 1954. ~ Hal Erickson, Rovi