Katya Petrovskaya, a crime columnist at the press center of the Central Internal Affairs Directorate, is disappointed: there is no mystery in the new case. Roman Pepelyaev shot nine people in the city center because he went crazy. But why, after the massacre in front of a whole crowd, does he not experience any emotions? No satisfaction, no remorse, no apathy. And he is so indifferent to his fate that, even while in a psychiatric clinic, he continues to attack people? Moreover, aggression is caused by young people of a certain appearance. Katya and Colonel Gushchin, who does not believe in either God or the devil, clearly see some kind of devilry here. And, it seems, not without good reason...