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