The Beast has been summoned. History will be unmade. Freshly knighted by King George V for discovering the source of the Nile, Sir Richard Francis Burton has been made an agent of the Crown. His mission: solve a series of high profile disappearances and – even more astonishing – locate the spirit of a dead mystic, Abdu el Yezdi. Burton and Swinburne are back and fighting for their very existence...