At night just outside Paris, a woman drives along a riverbank and dumps a corpse in the river. After the body is recovered, Dr. Génessier identifies the remains as those of his missing daughter, Christiane Génessier, whose face was horribly disfigured in an automobile accident that occurred before her disappearance, for which he was responsible. Dr. Génessier lives in a large mansion, which is adjacent to his clinic, with numerous caged German Shepherds and other large dogs.