All must die [Все должны умереть]

A lonely man lives on the outskirts. The neighbors are afraid of him because they know that he is a former criminal investigator. Once a friend comes to him and asks for help in one thing. He promises, but ... at dawn they find the corpse of his friend. The prosecutor’s office opens a case that instructs the young investigator to conduct. But every day the number of suspects decreases - they die ...