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
Миша Ауэр
— 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)