When Ian and Lyana Keane decide to relocate their family to the sleepy New Hampshire town of Littleton, there is one property in particular that they feel inexplicably drawn towards. The house is perfect. Tucked away and hard to find, shrouded in mist and shadow, their new home comes complete with a rich history, extensive grounds, intriguing character, and a Caretaker.

As the Littleton locals mutter ominously about the newcomers “up at Farr Hill”, the Keanes and their teenage children, Ariel and Zach, embark on a chapter of their lives that will shake and test the very limits of their realities. Where did these hidden rooms come from, and where have they gone? Where does the door in the woods lead? And why is Lyana acting so strangely? One by one the Keane family realise that dark forces - or something stronger - are afoot. And when Zach and Ariel stumble upon a tiny cottage in the grounds belonging to Marshall, the Caretaker who came with the house, things start to get much darker at Farr Hill.

Ian discovers a secret room which triggers his appalling childhood memories, Ariel and Zach share the same horrific dream, and Lyana’s sanity seems to ebb away, sucked into the very walls of the house itself. Be it cursed ancient mythology, dark magic, or just chilling coincidence, the Keane family are forced to rely on Marshall the caretaker for help, but is he really as kind and cooperative as he seems? Marshall gradually seems to become so much more than just a Caretaker, as he helps them uncover and destroy the unnatural threat that had lain buried deep in the walls of their house for nearly a century.