The novel is marketed as a “gut-wrenching thriller”. The story takes place in valley called the Sink, which runs true to the landscape of a typical Victorian big cat sighting. During the course of the story locals of the sink are terrified by a “moving shadow” of a monster living in the swamp. At the beginning of the novel, Winton dedicates the story “for the Nannup Tiger, wherever you are” . Thus the novel was based on actual legends of the creatures. Nannup is a small country town in Western Australia (Where Winton is from). The Nannup Tiger is believed to be a Thylacine (Tasmanian Tiger). Many sightings of the animal have been reported. The legend of the Nannup Tiger is embedded in the local culture so much that they even have a statue of the animal