The only weak point of the casting is Romy Schneider who is slightly over-acting. Beautiful B&W camera work and music. Directing work is directly influenced by Robert Bresson (LES DAMES DU BOIS DE BOULOGNE ; UN CONDAMNE A MORT S'EST ECHAPPÉ) & Louis Malle (ASCENSEUR POUR L'ÉCHAFAUD ; LE FEU FOLLET) : distant, "fire under the ice" style, sharp, precise, contained. The story is quite intelligent (an right-wing anti-communist idealist militant betrayed by his chief after a political assassination attempt + love story in which Romy Schneider is torn apart between him and his left-wing childhood friend : they will "fight in the island" to death, using Walther P-38 pistols) and time treatment managed by the editing work is superior art. One of the best movies made in France by the 1960's but it is necessary, when screening it, to not miss one sequence, even a short one, in order to be able to enjoy the subtle atmosphere construction. To be fully understood, this movie requires you to be aware of the political situation of France at that time.