Fantasy or Reality? Denizens of Hell? Nature spirits? Neuroses? Humanity has an aeon-old, love-hate relationship with these enigmatic forces. Demons have been vilified throughout history, but also worshipped. Find them wandering the pages of the Bible, dwelling in the lonely places of the earth, and inhabiting nightmares. They are emblems of dark power and personifications of corruption. They are our shadows, as impossible to grasp as they are to escape. Demonologist, Father James Burke gives us a potted field guide to the strange entities. Enter at your peril!