A sexual maniac brutally kills young women one after another—and, strangely enough, they are all Katya’s former classmates. Who is he? What does he want to achieve? Why are the surnames of the victims arranged alphabetically? Vague suspicions make Katya ask her lover to tail her husband. And together they lead the police to a false trail… But who could have compiled such a list of victims—if not the husband? Unless it was the former schoolteacher…