• Matt Haig is astounding

    Stephen Fry
  • A highly original page-turner

    Independent on Sunday
  • A brilliant story that you'll want to read in one sitting

    The Sun on Sunday
  • An exciting SF thriller but also a rich and deeply felt exploration of the line that separates humans – creatures of love, passion, fear and hate – from mere organic simulations

    Anthony McGowan, Guardian
  • It’s a treat to read such a satisfying, complex work

    Financial Times

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