Never before has the famous “Hamlet” so fully justified the name of the tragedy... Immediately after the performance, during a ceremonial buffet for a select audience, a triple murder occurred in the theater. A daring crime, unheard of for the provincial city of Tomsk! The villain disappeared without leaving any evidence. The police are at a loss, because any of the spectators or artists can be suspected. The killer, or rather, his shadow on the wall, was seen by only one witness - fifteen-year-old Daria, the granddaughter of the prompter. The determined young lady is not going to stay away from the investigation. And it seems that only she can figure out the culprit...