From the Sunday Times bestselling author of The Things We Do To Our Friends, comes a timely, gripping novel about the dark underbelly of wellness culture.

We can fix you. It's a promise that Betsy has heard far too many times. From the child psychologist, from her husband, and from the wellness trends that scream at her from her screen.

So far, it's been a lie. But this time, she believes it. Because Betsy has been offered a place at Carn - a luxurious, unorthodox retreat, where healing really is possible.

At Carn, she discovers that her imperfections make her unique, not weak. She isn't broken, just special. All Betsy has to do is follow the rules..