The Montgomery House was once a crown jewel of the White Mountains. Perched on a cliff with stunning views, it offered up summertime adventures, winter skiing and family get-togethers around the large log fire.

Until late one October night, a power cut – and the Montgomery parents and their four children vanish, leaving behind a trail of bloody footprints, a derelict house of secrets, and an enduring mystery that no one can solve.

But the formerly grand mansion is once more stirring into life. For Bee and Theo Davis, who've met, married and moved from downtown Boston in a matter of months, this is their forever home, and all is going well – until a young girl arrives with no memory of the property yet an unerring knowledge of where the first skeleton is hidden.

Now, Bee and Theo face a daunting choice of what to believe, who to trust, and how to survive. Because in the tiny village of Shereford the time has come to unravel the events that happened one terrifying night thirty years ago...