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.
Verdict: Unknown
> Dennis O'Keefe (Director)
> Montgomery Tully (Director)
> Jim O'Connolly (Assistant Director)
> Gordon Lang (Director of Photography)
> John C. Higgins (Writer)
> Maurice Procter (Book)
