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)

Jack Conway