Odinnadtsat molchalivykh muzhchin

1975. A writer who is preparing to publish a book about Hitler's executioner Alex Lyut is killed at his dacha near Moscow. Right before his death, he manages to tell his friend, the head of the special department of the Ministry of Internal Affairs for the search for war criminals, General Pyotr Somov, the incredible news: Fierce, who was considered dead since 1944, is alive. Somov instructs his best investigator, Colonel Yegor Sukharev, to sort out this case. In this, he is helped by a new employee of the special department - Senior Lieutenant Boris Kasyanov.

1975 - Cold War between the USSR and the USA, an arms race. Nuclear physicists are working hard. In the Soviet Union, a leak of classified information about the development of the Satan rocket is becoming apparent.

Ivan Cherkasov, as always, is investigating a complex and complicated case. A student of an architectural institute was thrown from the roof. His mother committed suicide. The suspects are residents of an elite house, cultural figures.

The life story of compulsive gambler and spendthrift William Palmer, nicknamed "Prince of Poisoners" who killed various friends and family members (including his own children) for financial gain without anyone so much as batting an eye.

1953. Due to the mass amnesty in the USSR, the criminal situation is tense. At the same time, Ivan Astafiev, a former reconnaissance platoon commander, returns to his hometown of Gorky. And then he becomes a victim of an attack by bandits, and then falsely accused of beating the attackers. Ivan's pre-war acquaintance, Captain Shvedov, helps him out of trouble and gets him a job at the Dynamo sports society to train police officers in hand-to-hand combat.

Picking up from Sherlok Kholms i doktor Vatson (1980) adventures of Sherlock Holmes and Dr. Watson continue as they oppose a fierce crime syndicate in one of their greatest challenges.