Everyone has a secret to keep . . .

Maeve Martin arrives at the High Water Center for the Arts determined to do one thing: launch her own dance company. Time is running out for the former principal dancer and mother of two to find her feet again after the collapse of a disastrous and violent marriage. At first, there's a thrill to being on her own for the first time in years, isolated in the beauty of a snowy mountain lodge.

But when an avalanche traps the guests inside, tensions run high. Help is coming, so they just have to hold on, don't they? But as days pass, the other guests are struck down by mysterious deaths, one by one. Now, as she waits in fear, Maeve must admit how little she knows about anyone else . . . and how useless a locked door is if the darkness is already inside.