Necropolis

Fifteen-year-old Scarlett Adams is caught in a media storm after her strange disappearance - which she refuses to explain. But far away, in Peru, Matt Freeman guesses the truth. Finally, he has found the fifth Gatekeeper: the last of the Five who must stand together against the dark powers of the Old Ones.

He's not the only one looking for her. The forces of evil are one step ahead, luring Scarlett to Hong Kong and trapping her in a dying city where the very air is poisoned and from which there can by no escape.