Hi-Jacked (1950)

A truck driver stops on a rainy road at night to help a stranded motorist, but it turns out to be a ruse--he is attacked, knocked out and his truck stolen. Since he has a criminal record, the police immediately suspect he's involved in the hijacking, and their suspicions are reinforced later when he is discovered--unknown to him--to be hauling stolen merchandise. He realizes he is being set up as a fall guy by the organization behind the truck hijackings, and he and a friend set out to determine who is trying to set him up, and why.