- Country: UK
- Genres: Thriller
- Release: 1957-09-27
- Director: Joseph Sterling
- Writers: A.R. Rawlinson
- Language: English
- Stars: Philip Friend , Mary Mackenzie , Leslie Dwyer , Allan Cuthbertson , John G. Heller , Chin Yu , Bill Nagy , Patrick Jordan , Marianne Stone , Frank Thornton
- Runtime: 69 min
- Awards: N/A
- AKA: Cloak Without Dagger (United Kingdom) , Cloak Without Dagger , Operation Conspiracy (United States of America)
- Plot: Intelligence officer fails a mission during WW2. Years later whilst working in a hotel he may discover what went wrong?
- IMDB:tt0050804
Operation Conspiracy Cast · · · ALL
Joseph Sterling
Director
Philip Friend
Major Felix Gratton
Mary Mackenzie
Kyra Gabaine
Leslie Dwyer
Fred Borcombe
Allan Cuthbertson
Colonel Packham
John G. Heller
Peppi Gilroudian
Bill Nagy
Mario Oromonda
Patrick Jordan
Captain Willis
Marianne Stone
Mrs. Markley
Frank Thornton
Mr. Markley
Boris Ranevsky
Antoine
Ivor Dean
Night Club Proprietor
Barbara Burke
Waitress
Anthony Baird
Corporal
Gretchen Franklin
Emmie
Larry Taylor
Sgt. Blake
Philip Locke
1st Soldier