Dr. Mammon Pyke heads the Redford Acres Asylum. He is pinch-faced, lean, and scrawny, and he is losing his grey hair. Dr Pyke is a well-respected man in London, but he belongs to the Fraternity, a mysterious organization with plans to take over the world. As part of the plan Dr. Pyke orchestrates a series of murders that, when plotted on a map of London, resembles a many-tentacled creature known as a chackh'morg. When the chackh'morg is complete, the Fraternity begins summoning gods known as the Glau Meska. The wych spirit within Alaizabel Cray is instrumental in this plan. At the end of the novel, Dr. Pyke explains the motives of the Fraternity and the origin of the wych-kin.
