'Mesmerising and unsettling . . . The best debut thriller for years' Sunday Times

Now a major film starring Nicole Kidman, Colin Firth and Mark Strong

Over 7 million copies sold worldwide

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Memories define us.

So what if you lost yours every time you went to sleep?

Your name, your identity, your past, even the people you love - all forgotten overnight.

And the one person you trust may only be telling you half the story.

Welcome to Christine's life.

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Readers are obsessed with Before I Go To Sleep:

***** 'A genius plot with an incredible twist. Before I go to Sleep is one of the best books I've read in a very long time.'

***** 'The book had me gripped from the very beginning . . . a real can't-put-it-down-till-the-last-page read.'

***** 'It's dark, fascinating, original and addictive - l read it in a day.'

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Final Cut, the unputdownable new thriller from S. J. Watson, is out now.