A former secret agent, who retired and wrote a first novel which tells the eventful adventures of his hero "Le Léopard ", comes back to work, reluctantly helped by an old maid.
A detective narrates this story of police investigating three murders and discovering that their leads take them to the heart of a white slavery ring that is also in the drug trade. Men set up parties, invite young women, and then drug them, kidnap them, and sell them off to brothels.
Marie is nineteen and bored in her little suburban life with no future. In a café, she meets the charismatic and beautiful Gerard. Blinded by adoration, Mary decides to leave her parents and her clerk job to live with the man she considers as the love of her life. But Gerard is a pimp, who soon forces her into prostitution. From within homes to out on the streets, the young woman gradually discovers a world of decay and violence.
