A brilliant locked room thriller set in a mysterious retreat in the Mexican desert, from the bestselling author of THE DARK.

Very few people get the opportunity to stay here.
And some don't get to leave ...

Zoey doesn't remember anything about last night. But she knows something went badly wrong. For she is no longer in New York. She's woken up in the desert, in a white building she doesn't recognise, and she's alone.

When she discovers she's been admitted to The Sanctuary, a discreet, mysterious, isolated refuge from normal life, to avoid jail, she is stunned. She knows she has secrets, troubles, but she thought she had everything under control. But as she spends more time with other residents, she begins to open up about what she's running from. Until she realises that not everyone in The Sanctuary has her best interests at heart, and someone might even be a killer . . .