Agentura — samaya bol'shaya tsennost' lyuboy spetssluzhby. Eto ne tol'ko set' shpionov, "dobytchikov" informatsii, a i "sobraniye" lyudey, sposobnykh izmenit' mirovozzreniye grazhdan i politicheskuyu situatsiyu. O nekotorykh agentakh, ostavivshikh sled v etom mire, s kotorymi imela delo sovetskaya spetssluzhba, nazyvavshayasya s momenta svoyego rozhdeniya v dekabre 1917 goda Vserossiyskoy chrezvychaynoy komissiyey po bor'be s kontrrevolyutsiyey i sabotazhem — VCHK, rasskazyvayetsya v etoy knige.