Melvyn Douglas
— Rene Farrand aka Arsene Lupin
Virginia Bruce
— Lorraine de Grissac
Warren William
— Steve Emerson
John Halliday
— Count de Grissac
Nat Pendleton
— Joe Doyle
Monty Woolley
— Georges Bouchet
E. E. Clive
— Alf
George Zucco
— Prefect of Police
Rollo Lloyd
— Duval
Vladimir Sokoloff
— Ivan Pavloff
Ian Wolfe
— A. Le Marchand - Detective (as Ien Wulf)
Tully Marshall
— Monelle
Jonathan Hale
— F.B.I. Special Agent
George Davis
— Guard at Dock (uncredited)
King Baggot
— Detective (uncredited)
William Bailey
— Detective (uncredited)
Edward Biby
— Party Guest (uncredited)
Sidney Bracey
— Squad Car Driver (uncredited)
Egon Brecher
— Vasseur (uncredited)
Harvey Clark
— Hotel Assistant Manager (uncredited)
Chester Clute
— Reporter (uncredited)
Sidney D'Albrook
— Detective Alois (uncredited)
Frank Dawson
— François - Butler (uncredited)
Helen Dickson
— Woman Passenger at Dock (uncredited)
George Douglas
— Gendarme (uncredited)
Jay Eaton
— Man in Hotel Lobby (uncredited)
Stanley Fields
— André - Horse Groom (uncredited)
Christian J. Frank
— Detective (uncredited)
Otto Fries
— Truck Driver (uncredited)
John Harmon
— 'Butch' Harron - Gang Leader (uncredited)