About the book: 1987 / In the context of an aggravated crisis in capitalist countries, along with official churches, various mystical movements (clubs of ghosts, spiritualists, astrologers, Church of Satan, etc.), which to some extent marks a return to the Middle Ages. At the same time, apologists of capitalism seek to introduce religious and mystical ideas into the consciousness of the working people of socialist countries. The book talks about how science successfully fights mysticism, revealing many psychophysiological mechanisms of unusual mental states that are often used by mystics and clergy.