Cast
Emile Stemmler
Soldier at Station Checkpoint (uncredited)
Olaf Pooley
Detective-Interrogator
Noel Johnson
Frank Conway (uncredited)
Eugene Deckers
Alf
Gladys Henson
Attendant
Dinah Sheridan
Train Passenger at Checkpoint (uncredited)
Ewen Solon
Enemy Scientist (uncredited)
Patric Doonan
Customs Man
Jill Balcon
Wardress (uncredited)
Ernest Butcher
Tom - Lab Assistant (uncredited)
Marius Goring
Commandant Anton Razinski
Naunton Wayne
Mr. Hedgerley
John Gabriel
Night Field Telephone Officer (uncredited)
Richard Marner
Soldier on Train (uncredited)
Anthony Newley
Operator (uncredited)
Dane Clark
Bill Casey
John G. Heller
Soldier at Station Check Point (uncredited)
Philo Hauser
Waiter (uncredited)
Paul Hardtmuth
Priest
George Benson
Sandwich Stand Customer
John Horsley
Customs Officer
Anton Diffring
Officer at Station (uncredited)
Margaret Lockwood
Frances Gray
Wilfrid Hyde-White
Mr. Luke
Michael Hordern
Lab Director Owens
Sam Kydd
Customs Man (uncredited)
Eric Pohlmann
Joe - the bartender