The statistical handbook provides information on the activities of the Cheka-OGPU-NKVD-MGB from 1918 to 1953. Statistics reflect the work of the central apparatus of state security agencies and its local territorial bodies. The published statistical materials concentrate reporting on all lines of work of state security agencies. Information is provided on the number of persons prosecuted for anti-Soviet crimes, the number of persons sentenced to capital punishment, etc. The presented materials help in an objective assessment of the activities of security agencies in general and in particular reveal the scale of repression in the USSR.