Clive Brook
Dr. Karl Roder
Diana Wynyard
Irena Roder
Raymond Huntley
Rabenau
Derek Farr
Hans Glaser
Joyce Howard
Elly Schmidt
Howard Marion-Crawford
Kummer
John Penrose
Otto
Morland Graham
Father Landbach
Ronald Squire
Rudolf Spiedler
Reginald Beckwith
Emil Fenner
Clifford Evans
Dressler
Bernard Miles
Capt. Muller
Gibb McLaughlin
Dr. Weiner
Muriel George
Hanna
Martita Hunt
Frau Lehmann the Concierge
Hay Petrie
Sebastian
Manning Whiley
S.S. Trooper
Katie Johnson
Granny Schmidt
George Hayes
Policeman
Everley Gregg
Maria Tattenheim
Marie Ault
Woman Customer
Abraham Sofaer
Heini
Joan Hickson
Katie
Wyndham Milligan
S.S. Guard
Bunty Payne
Erna
Pat McGrath
Kurt
Ken Annakin
Radio Announcer (voice) (uncredited)
Ernest Butcher
Chestnut Seller (uncredited)
William Hartnell
Radio Location Aerial Operator (uncredited)
Mike Johnson
Fritz - Fenner's Dresser (uncredited)
Ben Williams
Nagel - Radio Location Expert (uncredited)
Victor Wood
(uncredited)