An American army officer working for British intelligence comes to post-war Berlin to solve a murder. His investigation is compromised when he falls for a nightclub singer, not realising she is an agent of the criminal mastermind he is on the trail of.
Richard Denning
as Major Gregory Keen
Carole Mathews
as Hedy Bergner
Ronald Adam
as Scammel / Dumetrius
Danny Green
as Yotti Blum
Brian Worth
as Capt. Peter Ridgeway
Hugh Moxey
as Sgt. Tom Coutts
Peter Swanwick
as Monsieur Paul Bonnet
Elwyn Brook-Jones
as Digby Mitchel
Ronald Leigh-Hunt
as Col. Julian Fentriss, M.I.5.
Robert Vincent O'Neil
as Capt. Hank Godowski
Paul Hardtmuth
as Dr. Buchmann
Bill Nagy
as Marzotti
