This book is a comprehensive review of Jewish magic from the 10th to the 15th century. Well-known Jewish traditions are explained, such as why a glass is broken at a wedding, and how the expression mazel tov is related to a belief in astrology. Rabbi Trachtenberg deals with Golems, Succubi, the Lillim, (from Lilith, Adam’s first wife), and other magical creatures, some well-known such as werewolves, and others not so well, such as estrie, mare and broxa. He presents detailed descriptions of talismans, amulets, charms, and other magical objects. His chapters deal with dream interpretation, medical beliefs, necromancy, and other forms of divination. Rabbi Trachtenberg’s appreciation of the role of magic in Jewish culture is significant for the study of Judaism, and for the knowledge of modern beliefs and practices in religions in general.