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'I couldn't put it down' Harper's Bazaar 'Dark, engaging and suspenseful' Financial Times 'Gripping' Metro 'Brilliant' Marie Claire 'Dazzling' Woman and Home 'Chilling' People 'Fascinating…compulsive' Economist 'Dramatic and intriguing' Red 'Fascinating, unsettling and all-too-believable' Easy Living 'Electrifying' Psychologies 'Fast-paced, intelligent and intriguing.' Stylist 'Emotional intensity mixed with a gripping mystery' Express 'Unputdownable. A brilliant thriller for anyone who has ever been online.' India Knight 'Unnervingly claustrophobic and enormously moving' Guardian