For centuries Eastern traditions have taken the subject of entity possession quite seriously. Ayurveda, the traditional medicine of India, recognizes bhutas or entities and their influence on mental and physical well-being, as well as the ways they can be evicted from the individual. Now, in a work that is unique in Western literature, Dr. Samuel Sagan examines the problem of these incorporeal beings that attach themselves to human beings as parasites, causing various emotional, mental and physical problems. A landmark study that presents sound analysis & treatment of this phenomenon, "Entity Possession" demystifies a topic that has been overdramatized by the folklore surrounding possession and exorcism.