Most people, when asked what they are most afraid of, answer: "I am not afraid of anything." This answer is not true, since each of the people at one time or another experiences some kind of fear. Some of the most intrusive fears are fears of irrational and otherworldly forces. Jean Delumeau and James Fraser in their works analyze exactly such fears characteristic of the entire history of mankind. The horror of ghosts, living dead, witches and sorcerers, the devil and demons dominated society for a long time, he continues to live now. Jean Delumeau and James Fraser from different points of view show the evolution of this horror, make an attempt to identify it, as well as find out the reasons for its extraordinary stability.