Changeling by Steve Feasey (author)

Trey thinks he’s ordinary – until he meets Lucien Charron. With his luminous skin that blisters in sunlight, and eyes that seem flecked with fire. Somehow Trey finds himself inside a luxury London penthouse, kitted out like a Bond villain’s lair. It’s the heart of a sinister empire, built on the powers of the netherworld – the magic of werewolves, vampires, sorcerers and djinns. In this strange place, under Lucien’s influence, Trey discovers a force inside himself that’s seething to break free. Trey is changing. But what is he becoming? A heart-stopping fantasy horror, shortlisted for the Waterstone’s Children’s Fiction Prize.