This criminal case about terrible murders was overgrown with more and more monstrous and frightening details. And police captain Ekaterina Petrovskaya, an employee of the Press Center of the Main Department of Internal Affairs of the Moscow Region, could no longer sleep at night after she saw photographs of young women victims of the May Killer. Two years ago, in hot pursuit, they arrested Rodion Shadrin, a mentally ill person, and put him in a psychiatric hospital for life. The city and the entire region breathed a sigh of relief. But here again the month of May - and again a double murder, which Shadrin could not have committed in any way - he was in a specialized clinic. So the maniac is still at large? And what do his messages mean - strange, unrelated objects were left on the bodies of the victims: shards of pottery, an old alarm clock, pillowcases from pillows and a leather whip from an intimate store ...