South Wales, 1989. Bill and Liz Rich leave London for Heol Fanog, a remote modern farmhouse in the foothills of the Brecon Beacons, determined to make a fresh start. At first, the isolation feels like freedom. But when, in the midst of a traumatic home birth, Liz becomes convinced she's seen a ghostly figure in the bedroom they start to feel increasingly afraid…

What follows is a steady escalation of the chillingly uncanny - unexplained disturbances and an unsettling sense that they are not alone. As Bill and Liz begin to investigate, the house draws them deeper into a history that refuses to stay buried. And as the land yields its secrets, so too does their marriage - testing the limits of trust, belief, and what they're willing to deny in order to survive.