Lewis is a town of secrets. There have long been rumors of something unnatural in the swamp, and more than one person has gone missing. Many blame the Royce family while others believe in a local monster, rising from the dark waters. As a child, Caleb witnessed something inexplicable the night the Royce place mysteriously burned to the ground. As an adult, Caleb returns to take over his father's role as sheriff, and the long shadow of the Royce family returns to haunt him. Caleb struggles to solve an eerily familiar crime and finds himself face to face with another old mystery—the legend of Catfish John.