"Smart and astonishing, Andrew Pyper has created a recurring nightmare for adults. The Demonologist holds a mirror to the reader and reveals the places where our deepest darkness lurks. Like Milton's Paradise Lost, this is the story of the human condition, the fall, and the way back. I slept with the light on for nights, too obsessed to stop reading and too terrified to dream." -- Brunonia Barry, New York Times and International Best Selling Author of The Lace Reader and The Map of True Places.