Synopsis by Janiss Garza
Originally a novel and then a stage play, Arsene Lupin should have made an intriguing film, but something in its suave spirit was lost. Perhaps this is due, in part, to Earle Williams' shallow interpretation of the arch criminal. Arsene Lupin (Williams) revels in outwitting the Parisian police with his slick masquerades. Lately he has been impersonating the "Duke of Charmerace" so as to get his hands on some valuables. But Lupin isn't as smoothly cold-hearted as he appears -- he falls in love with Sonia (Ethel Gray Terry), the secretary of one of his marks. But he is dismayed when he discovers that his lifestyle has inspired her to become a thief, too. Detective Guerchard (Brinsley Shaw) is determined to capture Lupin, but at the last minute the crook entraps him in a secret elevator, grabs Sonia, and takes off to lead a better, more honest life.