The book of Vladimir Orlov (1882-1941), a real state adviser, investigator for especially important cases at the headquarters of the Western Front during the First World War, an outstanding Russian counterintelligence officer, now practically unknown, was published in English under the name "Secret Dossier." Its author is a legendary personality. Suffice it to say that he was investigating such noisy stories as the case of the betrayal of the Minister of War Sukhomlinov, the case of the espionage of the gendarme colonel Myasoedov, the case of a number of St. Petersburg sugar bankers who worked in favor of Germany, etc. And his illegal work in the Cheka (criminal commission), where he infiltrated on the instructions of General Alekseev, took place literally in front of Dzerzhinsky himself.