¿He could feel it in the blackness, a difference in atmosphere, a sense of evil, of things hidden.¿ Amy Snowden, in middle age, has long since settled into a lonely life in the Yorkshire town of Gunnarshaw, untilamp;mdash;to her neighbours' surpriseamp;mdash;she suddenly marries a much younger man. Months later, Amy is found deadamp;mdash;apparently by her own handamp;mdash;and her husband, Wright, has disappeared. Sergeant Caleb Cluffamp;mdash;silent, watchful, a man at home in the bleak moorland landscape of Gunnarshawamp;mdash;must find the truth about the couple's unlikely marriage, and solve the riddle of Amy's death.