The title was a clue, but this is one of the more cynical examples of the giallo I've seen, a reminder that the filmmakers who brought artistry to the genre—Sergio Martino or Aldo Lado—were the exception rather than the rule. Director Andrea Bianchi seems primarily concerned with keeping a parade of nude bodies in front of the camera, as there are no setpieces to speak of and much of the violence occurs offscreen.
I'm giving this a 4/5 for both the fantastic music score by Pisano & the beautiful Fenech starring in. Despite the super-sleazy-sounding title, it's overall a good giallo filled with some kinky sex & shocking blood (also had that '80s De Palma thriller feel in, too) while kept me guessing who the killer dressed as motorcyclist was. My second Bianchi work I've seen, by the way.