A half-drowned stranger turns up at the door of Garad Gaheris, retired King's Champion, with a hell of a story to tell. The ex-knight may have uncovered a conspiracy involving the very highest echelons of London's elite.

Current King's Champion Si Wyll, a master illusionist, still reeling from the betrayal of his lover and the death of his mentor, is poised to become the most dangerous man in London. Then a figure from his past surfaces, determined to blackmail him into a plot to change the balance of power for good.

And the city's godchildren, those born with illegal magical abilities, have had enough of being put down - but who must die to ensure their ascension?