Comfortable peaceful Гатчина, where "Russian Versailles" is located is a residence of emperor Alexander Third, punch-drunk the train of madnesses and enigmatic murders. Terrible incidents hide in itself a not clear threat for an emperor. But what? And who does create гатчинскую horror? It the retired hussar lieutenant Sergey Белозеров must find out on the instructions of обер-прокурора of the most Saint synod Победоносцева. But as far as investigation begins him to seem that still unhuman hands this business.