November 1897 The famous policeman of St. Petersburg, a favorite of the ladies, Rodion Vanzarov, having barely crossed the threshold of his twenty-fifth birthday, takes on another investigation: under delicate circumstances, a famous government official was brutally murdered. His son Serge, a successful “businessman” involved in the construction of railways, is suspected of murder. It seems that we are facing a classic crime based on family conflicts and the Vanzars are one step away from catching the killer. But by solving one murder, he brings to life an old, unfinished investigation, begun by... Leo Tolstoy!