A year has passed since Catherine and Michael Hall lost their teenage daughter in a car accident, leaving them and their 16-year-old son, Rowan, reeling in the aftermath of the tragedy. After Rowan escapes to boarding school, Catherine withdraws from her life as a successful London gallerist to Hamdean, an apartment in a Georgian country manor, where she and Michael had hoped to spend their retirement. When a beguiling young woman, Keira, appears at the house claiming to have once lived there, Catherine is reanimated by the promise of a meaningful connection. However, their relationship soon shifts to one of forbidding uncertainty as the mysteries of the past collide with the truth of the present.