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...