The Secret Door
World War II espionage in Lisbon with Allied safe-crackers cultivating a master spy and his wife so they can steal Japanese codes that are keys to Axis battle plans.
- Year: 1964
- Country: United Kingdom, United States of America
- Genre: Thriller
- Studio: Dorton Productions, Tifeshire Productions
- Keyword:
- Director: Gilbert Kay
- Cast: Robert Hutton, Sandra Dorne, Peter Illing, Peter Allenby, George Pastell, Martin Benson