The third novel by Alexander Babin about the retired opera Semyonov. He spent many years serving in the sixth department. For his secretive nature he received the nickname Quiet Man. Not much time passed when a judge was poisoned as a result of a previous crime, and then the regional prosecutor died from a killer’s bullet. The head of the homicide department of the police, Ermakov, understands: the crimes are ordered, and they are somehow interconnected. The thief in law and the security officers add “pepper” to the operatives; they have a common business: they import drugs into Russia under the patronage of a mafioso nicknamed Fantomas, who is connected with Ukrainian intelligence officers. The criminals are armed and very dangerous, planning to carry out terrorist attacks in the country. Ermakov again turns to the retired Semyonov for help. Only a person with the professionalism of Gleb Zheglov and the brains of Einstein can find the killer of the prosecutor, neutralize the terrorists and resolve the “issue” with Fantomas so that innocent people do not suffer. The quiet guy takes on this case.