John Barrymore
Duke of Charmerace
Lionel Barrymore
Detective Guerchard
Karen Morley
Sonia
John Miljan
Prefect of Police
Tully Marshall
Gaston Gourney-Martin
Henry Armetta
Sheriff's Man
George Davis
Sheriff's Man
John Davidson
Gourney-Martin's Butler
James T. Mack
Laurent
Mary Jane Irving
Marie
Mischa Auer
Louvre Tour Guide (uncredited)
Symona Boniface
Party Guest (uncredited)
Jack Byron
Louvre Guard (uncredited)
Jack Deery
Gendarme (uncredited)
Claire Du Brey
Mother at the Louvre (uncredited)
Geraldine Dvorak
Party Guest (uncredited)
Christian J. Frank
Detective (uncredited)
Olaf Hytten
Party Guest (uncredited)
Carl M. Leviness
Party Guest (uncredited)
Theodore Lorch
Lupin's Butler (uncredited)
Frank McLure
Jeweller (uncredited)
King Mojave
Party Guest (uncredited)
Claude Payton
Gendarme (uncredited)
Albert Petit
Party Guest (uncredited)
Georges Renavent
Duval (uncredited)
Henry Roquemore
Customer (uncredited)
Milton Royce
Party Guest (uncredited)
Hector V. Sarno
Gendarme (uncredited)
Joe Sawyer
Leroux (uncredited)
Henry Sedley
Accused Officer (uncredited)
Philip Sleeman
Museum Guard (uncredited)
Nicholas Soussanin
Martin's Butler (uncredited)
Ellinor Vanderveer
Party Guest (uncredited)
Roland Varno
Jean Moucante (uncredited)
Leo White
Jeweller (uncredited)
Florence Wix
Party Guest (uncredited)