- Walter Pidgeon
- Captain Alan Thorndike
- Joan Bennett
- Jerry Stokes
- George Sanders
- Major Quive-Smith
- John Carradine
- Mr. Jones
- Roddy McDowall
- Vaner
- Ludwig Stössel
- Doctor
- Heather Thatcher
- Lady Alice Risborough
- Frederick Worlock
- Lord Gerald Risborough
- Roger Imhof
- Captain Jensen
- Charles Bennett
- Costermonger
- Frank Benson
- Cab Driver
- Ted Billings
- Newsboy
- Walter Bonn
- Harbor Policeman
- Sven Hugo Borg
- Ship's First Mate
- Egon Brecher
- Whiskers Pawnbroker
- Cyril Delevanti
- Cab Driver
- Carl Ekberg
- Adolf Hitler
- Herbert Evans
- Reeves
- Richard Fraser
- Navigator
- Arno Frey
- Police Lieutenant
- Douglas Gerrard
- Policeman
- Gibson Gowland
- Man on Underground Reading Paper
- William Haade
- Third Sentry
- Bobbie Hale
- Costermonger
- Holmes Herbert
- Saul Farnsworthy
- Keith Hitchcock
- Bobby
- Adolf Hitler
- Adolf Hitler
- Olaf Hytten
- Piel - Saul's Law Clerk
- Hans Joby
- German Tracker
- Kurt Kreuger
- German Attaché
- Bruce Lester
- Co-Pilot
- Adolf E. Licho
- Little Fat Man
- Eily Malyon
- Lyme Regis Postmistress
- Lester Matthews
- Major
- Virginia McDowall
- Mary, the Postmistress's Daughter
- Adolph Milar
- German Pigeon Man
- Carl Ottmar
- Harbor Policeman
- Lucien Prival
- Umbrella Henchman
- Otto Reichow
- First Sentry
- John Rogers
- Cockney-Henchman
- Clifford Severn
- Cockney Boy
- Robert R. Stephenson
- Second Sentry
- Frederik Vogeding
- Ambassador
- Wilhelm von Brincken
- Harbor Police Chief
- Katherine Yorke
- Woman passerby
