Warner Oland as Charlie Chan

Keye Luke as Lee Chan

Jon Hall as Philip Nash

Irene Hervey as Diana Woodland

Russell Hicks as James Andrews

Frederick Vogeding as Ivan Marloff

Halliwell Hobbes as Colonel Watkins, police commissioner

Neil Fitzgerald as Dakin - Colonel Watkins' Aide

Max Wagner as Taxi Driver Henchman

Colin Kenny as Reporter

Torben Meyer as French Diplomat

Joan Woodbury as Dancer in Versailles Cafe (uncredited)

Harry Strang as Chauffeur