Journalist, writer and scientist A. A. Antonov-Ovseenko, grandson of the famous revolutionary, dedicated his book to the most mysterious phenomenon of Russian history - Bolshevism. How did a small group of revolutionaries manage to destroy a huge empire? Who really paid for the Russian Revolution? How did the Bolsheviks retain power? All these questions remain relevant for modern history! The author created his work based on many years of research into archives and unique documents.