She can't trust anyone. Not even herself . .

. *Shortlisted for the Fingerprint Award for Debut Book of the Year**Shortlisted for the Best Fiction Audiobook at the British Book Awards*'I raced through it.' Lucy Foley'Outstanding.' Harlan Coben'Heart-pounding.' Lucy ClarkeWhen you have it allSarah Collier has been lucky: she's got a glittering scientific career and a husband who loves her more than anything. And you start to lose itBut now she's showing signs of early Alzheimer's, and the only hope for a cure is in a controversial new technology being unveiled in Switzerland.

You'd go anywhere for help In Geneva, as events turn dangerous and her memory loss worsens, Sarah has to decide who to trust: the people around her - or, despite her symptoms, herself.