After a short hiatus, the "Lone Wolf" film series returned with the character more debonair than ever. In this film, Mohr plays the jewel thief turned detective. Because of his notorious past, Mohr is the main suspect in the theft of a museum jewel. Much like the "Thin Man" series starring
William Powell, Mohr coolly and smoothly works on catching the real crooks and maintaining his innocence, all the while eluding the authorities until he is proven right.