"Quite simply the best debut novel I've ever read" (Tess Gerritsen)
"Brilliant in its pacing, profound in its central question, suspenseful on every page - and satisfying in its thriller ending" (Anita Shreve)
"A deft, perceptive exploration of a fascinating neurological condition, and a cracking good thriller" (Lionel Shriver)
"A terrific first novel - well-written, genuinely unsettling and psychologically very plausible. Thrillers seldom come much better than this. Loved it, read it in one" (Joanne Harris)
"An exceptional thriller. It left my nerves jangling for hours after I finished the last page" (Dennis Lehane)
Memories define us. So what if you lost yours every time you went to sleep
? An original, haunting and deeply chilling debut thriller, and a Sunday Times
bestseller in hardcover.