Sellers Of Girls

After a series of hardships in Paris, young Laurent falls into the hands of a nefarious white slavery-narcotics ring. She's sent by boat to South America and manages to get engaged to a crewman Winckler en route. The hapless Laurent rebels against her slavery (which, of course, is dealt with in appropriately evil manners). Eventually it's discovered that Marchal, seemingly a mysterious stranger causing dissent between rival bad guys, is actually an Interpol agent who has been assigned to break up the ring. Laurent goes back to her fiance with all resolved nicely.