Are the ancient Eleusinian mysteries connected with the Athenian plague? What exactly helped the Templars get rich? Is there a demon depicted on the Isenheim Altar? Did the path of St. James save pilgrims or was it the Road of Death? What “invisible demons” attacked Polotsk? Where did the fierce crocodiles in the Russian chronicle come from? What is the mysterious witch doing in the engraving from Molitor's treatise? Why were people in Rus' afraid of the dew of St. Ferapont? The inquisitors believed that witches steal penises and place them in nests in trees, and the devil personally tears off the penises. Did the Russian eunuchs believe that, on the contrary, the Lord himself tears off members? Who did Baba Yaga fight with? What explains the epidemics of possession in monasteries in the 16th and 17th centuries? What influenced the popularity of the hallucinogenic mandrake? Why did serious hunts for witches and werewolves begin only in the 16th century? What triggered the French Revolution? What role did the humble fungus from which the famous psychedelic LSD was synthesized in the 20th century play in these and many other events?