"When nuclear scientists are kidnapped and smuggled behind the Iron Curtain, an FBI man and a British agent are assigned to catch the kidnappers."
George Raft
as Steve Rossi
Sally Gray
as Joan Miller
Clifford Evans
as Michael Grand
Reginald Tate
as Colonel Wilkes
Patricia Laffan
as Irma Brookes
Frederick Piper
as Inspector Reid
Roddy Hughes
as Porter
June Ashley
as Blonde Contact in Flat
Grace Arnold
as Neighbour (uncredited)
Ernest Blyth
as Morgue Attendant (uncredited)
Cyril Chamberlain
as Bailey (uncredited)
Arnold Diamond
as Max (uncredited)
Howard Douglas
as Taxi Driver (uncredited)
Arthur Lovegrove
as Phillips (uncredited)
Anthony Pendrell
as Rees (uncredited)
Norman Pierce
as Inspector Hobbs (uncredited)
Harry Towb
as Immigration Officer (uncredited)
John Warwick
as Security Chief Brice (uncredited)
Seymour Friedman
Director
Ronald Kinnoch
Associate Producer
Bernard Luber
Producer
Hans May
Original Music Composer
Eric Cross
Cinematography
Tom Simpson
Editor
George Paterson
Art Direction
Jill Carpenter
Makeup Artist
Pauline Trent
Hairdresser
John 'Pinky' Green
Production Manager
Edward Joseph
Pat Kelly
Assistant Director
Eric Pavitt
Billy Russell
Leslie Hodgson
Sound Editor
Charles Tasto
Sound Mixer
Frederick Ford
Additional Photography
Arthur Graham
Camera Operator
Bert Mason
Cyril Stanborough
Still Photographer
Bill Bonner
Clapper Loader
Phyllis Crocker
Continuity
John Baines
Screenplay
Peter Graham Scott
Fred Mannin
Draughtsman
Humphrey Cull
Eric Cass
Boom Operator
Nicholas Phipps
Additional Dialogue