AllMovie

Wealthy and spoiled Myra Van Clever (Gloria Talbott) hires Superman (George Reeves) to entertain at a party. What Myra doesn't know is that she has been manipulated into a criminal scheme cooked up by her guardian Jonas Rockwell (John Eldredge), who intends to use Superman as an unwitting courier for a set of counterfeit plates. Ultimately, Jonas tips his hand and locks Myra into a safe with reporters Jimmy Olsen (Jack Larson), Lois Lane (Noel Neill) and Clark Kent--who of course is Superman in disguise, but is unable to "transform" himself in full view of his fellow prisoners!