When Joe Valachi (Charles Bronson) has a price put on his head by Don Vito Genovese (Lino Ventura), he must take desperate steps to protect himself while in prison. An unsuccessful attempt to slit his throat puts him over the edge to break the sacred...
Police inspector Léonetti, a tough, efficient policeman, has been sent to a second-rate police station after being reprimanded. There he is given a partner, young and beautiful Jeanne Dumas. The duo are soon assigned a very difficult mission: to find...