Rocher and the new lieutenant Emma witness the death of a female student in prep school found suffering in the basement of her high school. The first witness accounts point the investigators to Alain Mandrillon, a lively literature teacher who gives his course content a sexual slant to lure certain students into his bed. When they go to his home to question him, they find him knocked unconscious by Jules Leroux, a repeat-offender delinquant in his senior year at the school. Two assaults in twelve hours – hardly a coincidence. But why was Jules going after his …