The famous expert analyst Drongo always doubts when the evidence pointing to a suspect is too clear. He doesn't believe what immediately catches his eye. So it is this time. Everything indicates that businessman Tevzadze killed the deputy head of the criminal investigation department, Protalin: he was in the apartment of the murdered man when the police arrived, his fingerprints were on the pistol, and during interrogation the suspect confessed to his crime. But Drongo is sure that Tevzadze did not kill the police chief, but that someone else committed the crime. And he turned out to be right...