For centuries, Arkansas locals have shared stories of a mysterious reptile called the Gowrow that hunts prey in the caves along the White River. A 12-foot monster with a long tail and sharp teeth, it is said to stand on its hind legs and release a loud hunting call that echoes throughout the nearby hollers. Armed with a series of accounts from Ivan Sanderson, the team investigates recent sightings of this creature to determine if it is merely folklore or an ancient reptilian predator that has survived in the underground chambers of the Ozark Caverns.