F.M. Dostoevsky's novel "Demons" - the most readable of the great Pentateuch of the writer. In the 150 years since its inception, it has repeatedly fallen out of favor with critics and the reading public. The novel is sharply critical of revolutionary violence in any of its manifestations. But this is the first cut. Sociology and political science phenomena. The book "The Cross and the Demons of Nikolai Stavrogin" turns to metaphysics. The two lines intersect in "Demons." The line of Petrusha Verkhovensky, a political adventurer and the practice of revolutionary terror.