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