England, 1940, during World War II. An MI5 officer, codenamed Jack King, infiltrates a network of conspirators, a British fifth column sympathetic to Nazi Germany, in order to control the organization and destroy it in the event of a German invasion. But who was he? A single person or several?
- Genre: Documentary, History, TV Movie
- Studio: 13 Productions, Planète+
- Keyword: espionage, world war ii, secret organization, mi5, fifth column
- Cast: Frédéric Sanchez, Sébastien-Yves Laurent, Stephen Dorril, Thomas Hennessey, Michael Jago, Michael Smith