A private investigator is forced into a dangerous alliance with a killer in order to uncover a quiet town’s grisly criminal underbelly and clear the name of her mentor, who is implicated in the crimes.

A doctor from New York travels to a remote plantation in the 1890s to care for a disturbed boy who seems to have inexplicable abilities. She begins treating the child, but in doing so, ignites a war between science and religion as the local priest believes the boy is possessed by the devil and the cause of the village's woes.