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.
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.
Top Cast
Dennis O'Keefe
Character: Joe Dennison
Margaret Sheridan
Character: Marline Miller
Philip Friend
Character: Insp. McClaren
Alan Wheatley
Character: Thompson Blake
Francis de Wolff
Character: Yeo
Eric Berry
Character: Hunziger
Gudrun Ure
Character: Sgt. Smith
Seymour Green
Character: Lascelles
Paul Hardtmuth
Character: Dr. Eric Miller
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