Red Light Girls (1974)

They're Italy's notorious "Ladies of the evening" catering to the strange cravings of their kinky, high-paying clients. But suddenly, the girls of the street find themselves being stalked by someone with desires even they can't satisfy. After a series of shocking crimes, the clues lead police to a pornographic film maker and his stable of lovely models and starlets. But can the authorities track down the "Hooker Maniac" before he strikes again?