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

Holmes Herbert

Saul Farnsworthy

Egon Brecher

Jeweler

Eily Malyon

Postmistress

Herbert Evans

Reeves (uncredited)

Charles Bennett

Frank Benson

Ted Billings

Walter Bonn

Sven Hugo Borg

Cyril Delevanti

Cab Driver (uncredited)

Carl Ekberg

Adolf Hitler

Richard Fraser

Arno Frey

Douglas Gerrard

William Haade

Keith Hitchcock

Olaf Hytten

Piel - Saul's Law Clerk (uncredited)

Hans Joby

Kurt Kreuger

German Attaché (uncredited)

Bruce Lester

Adolf E. Licho

Lester Matthews

Major (uncredited)

Virginia McDowall

Adolph Milar

Carl Ottmar

Lucien Prival

Otto Reichow

John Rogers

Clifford Severn

Robert R. Stephenson

Frederick Vogeding

Wilhelm von Brincken

Bobby Hale

Costermonger (uncredited)