A security leak is found at a Southern California atomic plant. The authorities stand in fear that the information leaked would go to a hostile nation. To investigate the case more efficiently, Dan O'Hara, an FBI agent, and Philip Grayson, a Scotland Yard sleuth, join forces. Will they manage to stop the spy ring from achieving their aim?
Cast
Louis Hayward
Philip 'Scotty' Grayson
Dennis O'Keefe
Daniel F. O'Hara
Louise Allbritton
Dr. Anastasia 'Toni' Neva
Carl Esmond
Dr. Ritter von Stolb
Onslow Stevens
Igor Braun
Raymond Burr
Krebs
Art Baker
Dr. Frederick Townsend
Lowell Gilmore
Dr. William Forrest
Philip Van Zandt
Anton Radchek
Charles Evans
Dr. Homer Allen
Frank Ferguson
Carl Bemish
Reed Hadley
Narrator (voice)
Ray Teal
Police Sergeant
William Tannen
FBI Chemist
Gale Storm
Voice on Tape Recorder
Arthur Space
Mr. North
Tamara Shayne
Mrs. Ecko, the Landlady
Keith Richards
FBI Agent Miller
Grandon Rhodes
Adolph Mizner
Steve Pendleton
Police Detective Gaines
Howard Negley
Feodore
Jimmy Lloyd
FBI Agent Alison
Myron Healey
FBI Agent Thompson
John Hamilton
G.W. Hunter
Paul Bryar
Unknown
Fred Coby
Unknown
Bert Davidson
Unknown
Marten Lamont
Unknown
Lee Phelps
Unknown
Suzanne Ridgway
Unknown
Arthur Tovey
Unknown
Crane Whitley
Unknown
Crew
Gordon Douglas
Director
George Bruce
Screenplay
Bertram Millhauser
Story
James E. Newcom
Editor
George Robinson
Director of Photography
Ridgeway Callow
Assistant Director
Grant Whytock
Producer
Edward Small
Producer
Edward Colman
Camera Operator
Edward P. Lambert
Wardrobe Supervisor
Margaret Martin
Hairstylist
Norbert A. Myles
Makeup Artist
John R. Carter
Sound
Paul Sawtell
Original Music Composer
Howard Bristol
Set Decoration
Ken Lobben
Still Photographer
Dorothy B. Cormack
Script Supervisor
William Dalton
Grip
Joseph Small
Unit Manager
Rudolph Sternad
Art Direction
