Boris Viktorovich Savinkov (1879–1925) - revolutionary, terrorist, Russian political figure, one of the leaders of the Socialist Revolutionary Party, head of the Combat Organization of the Socialist Revolutionary Party, participant in the White Movement. The proposed monograph, based on specific materials from the Central Archive of the FSB of the Russian Federation, shows how B .IN. Savinkov became one of the most active and irreconcilable opponents of the Bolshevik Party, ready to take the most extreme measures in the name of his political goals. Executions, brutal murders, mass rape and bullying - that’s what Savinkovism represented. The book covers the operational activities of the KRO GPU - OGPU according to the conclusion of the head of the “People’s Union for the Defense of the Motherland and Freedom” B.V. Savinkov from Paris to the territory of the USSR. This study aims to fill many gaps in publications on the intelligence development of Operation Syndicate-2, and to make a number of significant clarifications in them.