The final four episodes of the TV series, an adaptation of Eduard Topol's novel. It is a story of a man who happened to be at the epicenter of the clash between the two competing power clans - the party nomenklatura and the top KGB functionaries. The chief protagonist of the film, investigator Shamraev, personifies the moral and professional pathos of the film - the ability to maintain one's ethical integrity and to carry out once professional and civil duty in a situation that seemingly excludes the possibility of making and defending one's moral choice.