Somerset 1894. When the death of his mother brings Nathan Appleby and his vivacious young wife Charlotte back to the family estate, they must turn t
he farm's fortunes around or risk ruin, and the devastation of the local community. Though the farm and its future demand their attention, when a vulnerable teenage girl is brought to Nathan, seemingly possessed by a terrifying spirit, he cannot leave her to suffer.
Nathan is a pioneering doctor who has worked at the forefront of the emerging science of psychology. He's an expert in mapping the dark places of the mind. Nathan believes there is always a rational or scientific explanation to be found for life's mysteries. So although Harriet's case is disturbing, Nathan must use every psychological technique he has to find a way to cure her, to free her from this terrible burden.
But what if Nathan is wrong - what if it's not an illness of the mind? Could Harriet actually be haunted?