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