A cranky police detective suspects a French duke of being the infamous thief ARSÈNE LUPIN.<br /><br />John & Lionel Barrymore costarred together for the first time in a motion picture in this intriguing crime drama. Alike and yet so different, they are the perfect counterpoint to each other. John plays his role with suave sophistication (when not in disguise) and Lionel is earthy & common in his portrayal, each obviously having a wonderful time trying to out act the other. Helped by a generous script, the outcome is pretty much a draw, with the viewer the clear winner.<br /><br />Although upstaged by the two male stars, Karen Morley is intriguing as the mystery woman John finds naked in his bed. Tully Marshall gives a colorful performance as a silly nobleman with much to lose to the master criminal. Henry Armetta & George Davis are very enjoyable as two seriously inept security guards. John Miljan provides a sturdy presence in his small role as the police prefect.<br /><br />Movie mavens will recognize an uncredited Mischa Auer as a guide in the Louvre during the climactic scene dealing with an attempted heist of the Mona Lisa.