While in London trying to nab several fugitives who stole a million dollars from a U.S. Treasury vault, American federal agent Dennison (Dennis O'Keefe) assists Scotland Yard Insp. McClaren (Philip Friend) in his search for a missing atomic scientist (Paul Hardtmuth). The detective duo discovers that the key to solving both cases may rest with the scientist's daughter (Margaret Sheridan) and her fascinating diamond.
Montgomery Tully | Director |
John C. Higgins | Writer |
Dennis O'Keefe | Director |
Helga Cranston | Editor |
Maurice Procter | Book |
Denis Wreford | Art Direction |
Steven Pallos | Producer |
Matyas Seiber | Music |
Charles Leeds | Production Manager |
Arthur Graham | Camera Operator |