The enemy at home. The Algerian war in French films - Starts from France, that established the state of emergency according to an act dating back to the Algerian war (1955) to cope with the revolt which set on fire the banlieues in 2005. Siri’s L’Ennemi intime, which came out in cinemas shortly afterwards, brought to the big screen exactly the French Algerian conflict. Contextualizing the film in the plentiful French production about this issue, the A. wonders whether we are faced with a new stage of "the Algerian syndrome" 50 years after the event or whether the Algerian war, caught up in a complex device of censorship and self censorship (official as well as by authors, producers, public), still remains the major repressed experience of French society (and its cinema). Keywords: Algeria, War, Memory, Cinema, History. Parole chiave: Algeria, Guerra, Memoria, Cinema, Storia.