Tight Skirts, Loose Pleasures (1965)

Catherine Guérande, a 19-year-old girl from Paris, turns to prostitution after a turbulent breakup. However, she soon finds herself in the crosshairs of Pornotropos, a ruthless pimp who controls a lucrative network of model agencies, cabarets, and camps, with his brother Thanatos handling the more violent aspects of their operation. Unhappy with a newcomer cutting into his profits, Pornotropos sends his girls to intimidate and assault her. Undeterred, Catherine relocates to another brothel, but fate takes a turn when an elderly man dies in her room, revealing he owned a marketing firm. Paul, a charming young executive from the company, begins to investigate the mysterious circumstances surrounding his boss's death, and sparks fly when he meets Catherine.