Does the Devil exist? An emphatic 'yes' is the answer given by Anthony Finlay, as one who has personally conducted exorcisms, and witnessed the power of 'the Evil One' to destroy lives. The author takes a deep and thought-provoking look at the role of the Devil, demons and demonology through the ages to the present-day; a seeming vacuum in the modern psyche may be the most fertile ground the Devil has ever had in which to flourish. The author brings to the subject of exorcism his own vivid encounters in the deliverance ministry when he was a Roman Catholic priest. On many occasions he performed the Office of Exorcism of places and people - the five percent who are truly possessed and whose condition is both horrific and otherwise unexplainable.