Alessandro Salieri long ago decided for himself that he would never again get involved with moths - the priestesses of love. But he couldn’t pass by this girl, she looked so pitiful and unhappy. In addition, she seemed like just a girl - about eighteen years old, no more. It's not surprising that he wanted to help her. He brought the girl to his apartment, and in the morning he discovered her body in the kitchen. Someone brutally stabbed the unfortunate woman with a knife. And given the locked doors and windows, the police have no other suspects except Salieri himself...