In August 1991, the monument to Felix Dzerzhinsky was dismantled at Lubyanka. This event marked the end of the Soviet era... The stern man in an overcoat at a turning point turned out to be more alive than all the living - the first ideological blow was dealt to him. The names of the Lilliputians who carried out the massacre of Gulliver either left behind a bad memory or faded into oblivion, which cannot be said about Felix Dzerzhinsky! This man left a deep mark on history, acting in various capacities: a courageous romantic revolutionary who spent many years in prison, the creator of the country’s main intelligence service, the “first security officer” who participated in the development and conduct of complex intelligence and counterintelligence operations. In addition, Felix Edmundovich fought against homelessness, restored transport, and finally led the entire industry of the country. The author of the book, Sergei Kredov, based on materials and information accumulated over the past hundred years, exhaustively answers the questions: who was Felix Edmundovich Dzerzhinsky and what did he do? as the “first security officer” and in other government positions?