Traditional science believes that vampirism does not exist, and numerous stories about vampires are products of primitive human fears and belong to the field of ancient legends and children's night horror stories. Nevertheless, 200 years ago the phenomenon of vampirism was the subject of official scientific study. The best doctors of that time carried out exhumations and made reports at the courts of European monarchs. Later, for various reasons, this problem and its study were banned. The author of this book, Vadim Deruzhinsky, 10 years ago on the pages of the newspaper “Secret Research”, opened the column “The Lost World”, in which all this time he introduced readers to new research and discoveries, including in the field of vampirology. A unique result of his work is in front of you. This encyclopedia presents unique information from all over the world about cases of vampirism, which today can finally be explained from a scientific point of view.