In this powerful book, the renowned exorcist of Rome tells of his many experiences in his ministry as an exorcist doing battle with Satan to relieve the great suffering of people in the grip of evil. It has been a European best-seller that has gone through numerous printings and editions. Fr. Gabriele Amorth is the Chief Exorcist of Rome. He has performed hundreds of exorcisms over many years. He has written about his experiences in various theological and spiritual journals.