Fourteen year-old Cosmo Hill longs to escape from the Clarissa Frayne Institute for Parentally Challenged Boys. But when he grabs a chance to get away, the attempt goes badly wrong. He can feel his life force ebbing away, sucked out of him by a strange blue Parasite... until a wisecracking gang of kids burst in, blast the creature and save him. They are the Supernaturalists, dedicated to ridding the world of these life-sucking parasites. When they realise that Cosmo can see these creatures too, they enlist him as one of them. An exciting major new novel from the author of the No 1 bestselling 'Artemis Fowl'. First time in paperback.