In ancient times it was a pagan altar, washed in the blood of human sacrifice. Then it lay hidden for centuries, its perfect whiteness darkened by age until it was possessed by a spirit. Stone and spirit fused, to take on the shape of an angel. The Bishop of Norwich was awed. This twelve foot carved angel must surely be a miracle in its mesmerising perfection. He installed it with due pomp and ceremony in his new cathedral. Then the disappearances started. An angel - but not for the forces of good. Abaddon - the Angel of the Pit - has arisen in his effigy and his power is building, day by terrible day. Cover art by Geoff Taylor.