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?

Cast:Frédéric Sanchez, Sébastien-Yves Laurent, Stephen Dorril, Thomas Hennessey, Michael Jago, Michael Smith,

Genre:Documentary, History, TV Movie,

country:France,

Production:Planète+, 13 Prods,