In 1979, under a bridge over the Volga in Kostroma, the body of a man was found—without documents or money, but with a flyer about a local hotel complex. The administration determined that the victim was an engineer from Moscow. Major Anton Ravcheev and Captain Nurlan Kulumbetov learned that this wasn’t the only similar attack in the past few weeks. Another unidentified body had been discovered near a railway carriage depot, and still another—in the park by the train station. Everything points to the actions of a single criminal, who likely acted on someone’s tip. When the detectives found out who could be behind these crimes, it shocked them.