From back of book: When Torchwood tracks an energy surge to a Cardiff nightclub, the team finds the police are already at the scene. Five teenagers have died in a fight, and lying among the bodies is an extraterrestrial device. Next morning, they discover the corpse of a Weevil, its face and neck eaten away, seemingly by human teeth. And on the streets of Cardiff, an ordinary woman with an extraordinary hunger is attacking people and eating her victims.

(Source: BBC Books)