This novel is based on real events that occurred in Soviet and post-Soviet Russia, from which the “Top Secret” stamp was removed. These secrets were kept behind seven seals. But if two people know a secret, it’s no longer a secret. This truth is proven both by the events that happened in the novel and by real life. The investigation into the high-profile murder of an American expert takes investigators back to the events of the 1930s. At that time, the Americans supplied Russia with agricultural equipment, which with enviable regularity broke down before it could reach the fields. At first, the country's leadership suspected the collective farmers of sabotage. But over time everything became clear. Stalin orders people to pay for hack work in the same coin. But which one?..