Nathalie Baye (Marie-Hélène Dumoulin)Xavier Beauvois (Marc Donizzi)Samuel Labarthe (Robert Cabris)Etienne Chicot (Lucien Issard)Jacques Spiesser (Roland Herbelin)Alain Fromager (Claude Thieville)Gisèle Casadesus (Clémence)Laurent Gamelon (Guillaume Ferronnier)Sam Karmann (Raoul de Saint-Maur)Stéphan Guérin-Tillié (Claude Duroy)Philippe Magnan (Jérôme Massenet)Roland Copé (François)François Négret (Le coursier)
A dinner: One woman and nine men. There is a traitor among them. 10 years after the Liberation of France, Marie Hélène Dumoulin, also known as Marie-Octobre gathers her former comrades of Resistance for one reception . She seeks to unmasked who has betrayed her friend Castille (the chief of a Resistance network) during the war. During the evening each person is suspected but there is just one guilty. A fascinating film with Nathalie Baye.