Oliver Gooch comes across a tooth, in a velvet box, with a handwritten note from 1888 to say it's a tooth from the boy Edgar Allan Poe. He displays it in his new bookshop, and names the store Poe's Tooth Books.
Oliver took the money from his small daughter Chloe's accident insurance and bought a converted church to live in with his altered child and wife. Rosie hopes Chloe will came back to herself but Oliver is secretly relieved to have this new easy-to-manage child, and holds at bay the guilt that the accident was a result of his negligence. On a freezing night he and Chloe come across the crow, a raggedy skeletal wretch of a bird, and it refuses to leave. It infiltrates their lives, it alters Oliver's relationship with Rosie, it changes Chloe. It's a dangerous presence in the firelit, shadowy old vestry, in Poe's Tooth Books.
Inexorably the family, the tooth, the crow, the church and their story will draw to a terrifying climax.