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