Overview

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.

Genres

Cast

Dennis O'Keefe

Joe Dennison

Margaret Sheridan

Marline Miller

Philip Friend

Insp. McClaren

Alan Wheatley

Thompson Blake

Francis de Wolff

Yeo

Gudrun Ure

Sgt. Smith

Paul Hardtmuth

Dr. Eric Miller

Colin Tapley

Sir Stafford Beach

Michael Balfour

Hoxie

Cyril Chamberlain

Castle

Paul Carpenter

Mickey Sweeney (uncredited)