Engineer Tim Frazer is hired by the mysterious Mr. Ross to search for his missing business partner Harry Denston. Denston appears to be involved in a case of espionage.
Tim Frazer
Helen Baker
Charles Ross
Madge
Barbara Day
Lewis Richards
Dr. Killick
Arthur Fairlee
Donald Edwards
Vivien Gilmore
Ruth Edwards
Gordon Dempsey
Edgar Tupper
Norman Gibson
Arthur Crombie
Detective Inspector Truemann
Lester
Mr. van Dakar
Hobson
Martin Cordwell
Ma Dodsworth
Captain Nikiyan
