Wagon Train (1957)

S1E16 The Luke O'Malley Story

Luke O'Malley is on the run from an outlaw who has vowed to kill him for turning him in to the authorities. Despite Luke's insistence that he had no choice, the outlaw refuses to believe him. To protect his two children, Luke disguises himself as a preacher and joins Adams' wagon train, though he doesn’t quite fit the role.