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.
Rated NR | Length 83 minutes
Dennis O'Keefe | Margaret Sheridan | Philip Friend | Alan Wheatley | Francis de Wolff | Eric Berry | Gudrun Ure | Seymour Green | Paul Hardtmuth | Colin Tapley | Michael Balfour | Cyril Chamberlain