After an accident that nearly kills her, Emily and her husband, Freddie, move from London to a beautiful Dartmoor country house called Larkin Lodge. The house is gorgeous, striking - and to Emily, something about it feels deeply wrong. Old boards creak at night, fires go out, and books fall from the shelves, and all of it stems from the terrible presence she feels in the second-floor room. But these things happen only when Emily's alone, so are they happening at all? She's still medically fragile; her postsepsis condition can cause hallucinatory side effects, which means she can't fully trust her own senses. Freddie doesn't notice anything odd and is happy with their chance at a fresh start. Emily, however, starts to believe that the house is being haunted by someone who was murdered in it, though she can find no evidence of a wrongful death.