The ferociously readable, #1 bestselling crime thriller that led to the much-loved ITV show... 'Wholly satisfying' Ian Rankin Young girls are disappearing nationwide Dr Tony Hill sets his team a task: find a link between the cases. Only one officer comes up with a theory, but it's too wild... that is, until one of their number is murdered and mutilated. Tony has started a game – one where hunter and hunted can all too easily be reversed. He has baited an aggressor whose charming manner hides a warped and sick mind... When a killer is hiding in plain sight Who can stop them? 'Truly frightening' The Times 'Sly and sophisticated, weaving the mundane with the stomach-churningly depraved' Express