|summary=A precocious, damaged girl faces a haunting from something even more 'evil' than she has been led to see herself as, in this flawless, gripping, teen horror. Read it even if you're older – but not if you're younger.
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'''Longlisted for the 2015 CILIP Carnegie Medal'''
Olivia is trapped, in a world somewhat of her own making. She is living a life of endless switching from a set of foster parents, to would-be adoptive parents, to care homes. Whenever she fetches up with nice adults, she worries too much about making mistakes, being too violent, clumsy, needy, noisy, spiteful – and prefers then to go the whole hog and make them despair of ever liking her, of losing all kind of sympathy with her. That way she can relax, knowing the truth, knowing the hatred is there – just as it was when her alcoholic mother was abusing and abandoning her and her baby siblings. Olivia is eleven. But in this one new house, with Jim, and his children, and the fostered young-mother-of-a-babe-in-arms, something is different. Something is definitely older than Olivia, and certainly more evil, and most assuredly better at getting its own way…