Drongo, a famous expert in crime, is visited by the well-known psychoanalyst Gurtyev. It turns out he has developed a unique theory that allows not only to find serial killers, but also to predict their future crimes. Drongo finds it hard to believe: after all, as everyone knows, maniacs are the most unpredictable—therefore the crimes are hard to catch. Yet Gurtyev is convinced of the power of his invention and predicts that very soon, in the Urals, a new serial killer will appear—one capable of eclipsing even Chikatilo with his deeds. Drongo is intrigued by the psychoanalyst’s confidence. And very, very timely…