In the early 30's, in France, the eighteen-year-old Violette Nozière lives with her mother, the housewife Germaine Nozière, and her father, the mechanic of train Baptiste Nozière, in a small apartment in Paris. The ambitious Violette has a double-life, working as prostitute during the afternoons, saying that she meets a fictitious friend, who would be the sister of her doctor. When she learns that she contracted syphilis from a client, she lures her parents, says that she is a virgin, syphilis would be a genetic disease, and they would take medicine. Soon she meets the pimp Jean Dabin that explores her, and Violette gives money and gifts to him every day. She says that she is wealthy, but she gets the money through prostitution and stealing from her parents. When she learns that her father has a dowry to her wedding, she poisons them, but Germaine survives, and the murderer goes to court.
—Claudio Carvalho, Rio de Janeiro, Brazil