Emma是一名心理学家，专门治疗经历过严重创伤以及PTSD的受害者。当Laura被发现时，她身体盖满了不是她自己的血，她没有任何记忆，也不知道是谁的血，但她只同意跟Emma说话。一开始，她们在一个高度安全性设施里谈话，Laura跟Emma叙述她的男朋友，一个近乎完美的男人。Emma边听边怀疑Laura背后有更黑暗的事实。当Laura开始叙述更多细节，Emma有种似曾相识的感觉，因为Laura在描述的男人跟自己的丈夫实在太像了。在接下来的几天，Emma越来越怀疑，而当她丈夫出差后没有在预期的时间回来，她开始担心Laura是不是他们婚姻的第三者，而把她丈夫杀了。她不知道的是，Laura本身也曾经是一名心理学家，而她在跟Emma玩一个猫与老鼠的游戏。。。

Laura到底是受害者、目击者，还是杀手？

这本书是今年伦敦舒展讨论度最高的惊悚小说之一。故事最后的结局绝对让人猜不出来！

关于作者：

Naomi Williams grew up in Yorkshire and now lives in London with her family. She studied English at university and started her career teaching English and Drama, before becoming a full-time writer. There are just the usual Hachette options in place.

“I inhaled PATIENT X. Such a clever, chilling and unputdownable thriller. A masterclass in plotting with a killer twist that made me want to go back to the beginning and read it all over again. The shocks keep coming until the very last page. Stunning!”--Claire Douglas, Author of The Couple at No. 9 and The Girls Who Disappeared