Cecil Norton is a prolific writer living a peaceful life until he is involved in an almost fatal accident. His girlfriend, Beverly Wilson ends up in the hospital with broken ribs and Cecil discovers that he has double vision. It isn't long before he also discovers something strange about his malady. He sees two images of everything and he has the ability to see the other side of some people, especially their dark side, but only if they are werewolves. As he tries to confront his problem and figure out what is going on he finds out that most of the town where he lives is inhabited by werewolves. He sets out to find out what they are up to and the effort nearly costs him his life.