L'Enigmatique Monsieur Parkes is the French-language version of the American romantic melodrama Slightly Scarlet. Replacing Evelyn Brent and Clive Brook, the stars of the original version, are Claudette Colbert and Adolphe Menjou. The story takes place on the French Riviera, where heroine Lucy (Colbert) successfully poses as a princess to mingle with the glitterati. To keep her low-born origins a secret, she is forced to serve as accomplice for a master jewel thief (Paul Lukas in the original, Emile Chautard in the French version). While pilfering the jewels of a wealthy American woman, Lucy is caught in the act by gentleman thief Monsieur Parkes (Menjou) -- and it's love at first sight, whereupon each crook promises to reform for the other's sake.
by Hal Erickson synopsis