This book is a history of the idea of the demonic in human history from the ancient world to contemporary life from the late twentieth century to the twenty-first century. It begins with an analysis of the idea of the demonic in the cultures of the ancient world, followed by chapters on the Bible, the Talmud and Mishnah, the early church fathers, the demonic in medieval Judaism and Christianity, as well as the demonic in Islam, early modern Judaism, the Reformation period, the early modern period in the eighteenth and nineteenth centuries, and the demonic in contemporary life. Additionally, there are appendices with additional information on the demonic in painting and sculpture, in music, and in the film and movie industry.