One of his best films from Fernando Di Leo, violent and thrilling, sometimes thought of as the, 'King of the B's', and those were certainly considered the best of the poliziesco films. Known as writer and director early on of one of the best scripted spaghetti western and later for directing these splendid thrillers. Although he made a couple of sexy ones, Asylum Erotica (1971) with Rosalba Neri and Klaus Kinski and really liked, To Be Twenty (1978) with Gloria Guida and Ray Lovelock. But he is really known for these splendid action-packed poliziesco. This is the third of his trilogy, first with Caliber 9 (1972) and The Italian Connection (1972) even if these are thought of as better than this one this is still great and especially has a wonderful turn by Henry Silva. This is the one with the amazing killing in the porno cinema at the beginning and although there is a number of great actors like Richard Conte and the poor girl, who had to be kidnapped, is Antonia Santilli, had been in theatre and as a model and appeared in Playmen, an Italian adult magazine. She does a real performance in this, nude most of the time (a copy of the magazine in the film?) and has a sad ending, although I have to say that such a lot of people die in this one.
