The Crescent Moon Kingdoms, land of djenn and ghuls, holy warriors and heretics, Khalifs and killers, is at boiling point. A power struggle between the iron-fisted Khalif and the mysterious master thief known as the Falcon Prince is reaching its climax. In the midst of this brewing rebellion, a series of brutal supernatural murders strikes at the heart of the Kingdoms. Only a handful of reluctant heroes can learn the truth, and stop the killing. Doctor Adoulla Makhslood just wants a quiet cup of tea. Three score and more years old, he has grown weary of hunting monsters and saving lives, and is more than ready to retire from his dangerous and demanding vocation. But when an old flame's family is murdered, Adoulla is drawn back to the hunter's path. Raseed bas Raseed, Adoulla's young assistant, a hidebound holy warrior whose prowess is matched only by his piety, is eager to deliver God's justice. Zamia Badawi has been gifted with the near-mythical power of the Lion-Shape, but shunned by her people for daring to take up a man's title. She lives only to avenge her father's death. Until she learns that Adoulla and his allies also hunt her father's killer. Until she meets Raseed.