'A deft, perceptive exploration of a fascinating neurological condition, and a cracking good thriller.' Lionel Shriver 'As far as psychological thrillers go, you can't get much more psychological, or more thrilling.' Age 'Quite simply the best debut I've ever read.' Tess Gerritsen 'An exceptional thriller. It left my nerves jangling for hours after I finished the last page.' Dennis Lehane 'A deeply unsettling debut that asks the most terrifying question - what do you have left when you lose yourself?' Val McDermid 'Has an impossible-to-put-down quality...Before I Go to Sleep is a psychological thriller of intricacy and mind-bending qualities.' Herald Sun 'It's hard to think of a recent debut novel as original and ambitious in its premise - or as successful in its execution - as S. J. Watson's Before I Go to Sleep. I also can't think of any book I've read this year which so instantly hooks you with its opening...a complex, well-thought-out, literary psychological thriller.' New Zealand Herald 'A top-class psychological thriller.' Listener