A highly intelligent murderer fools the Paris police. His victims: young women who lived in the Bastille district. As a "calling card", the killer leaves a bloody footprint at the crime scene. New inspector LaBréa and his eleven-year-old daughter Jennie have come to Paris to recover from the murder-mugging of Jennie's mom.
The famous producer Jacques Molin has been murdered. During his investigations in the deceptive glittering world of the Parisian film business, Inspector LaBréa comes across numerous suspects.
The brutal murder of an ex-convict who was mutilated in the genital area is believed to be the responsibility of a group of radical feminists suspected of finding and punishing acquitted rapists. A second bloody deed according to the same pattern, confirms this suspicion. All clues seem to lead to psychologist Christine Payan, who who helps rape victims. But LaBréa is not satisfied with the obvious.