Raw, relentless and heart-poundingly real, this book knocked me off my feet like a river in flood' Ruth Ware, bestselling author of In a Dark, Dark Wood and The Woman in Cabin 10

'A thought came to me that I couldn't force away: What we are wearing is how we'll be identified out in the wilderness.'

Win Allen doesn't want an adventure.

After a miserable divorce and the death of her beloved brother, she just wants to spend some time with her three best friends, far away from her soul-crushing job. But athletic, energetic Pia has other plans.

Plans for an adrenaline-raising, breath-taking, white-water rafting trip in the Maine wilderness. Five thousand square miles of remote countryside. Just mountains, rivers and fresh air.

No phone coverage. No people.

No help...