The title fiend in this silent "old dark house" horror/comedy is mad scientist Lon Chaney, who arranges roadside accidents near his laboratory to supply him with subjects for his experiments. Can store clerk/correspondence school detective Johnny Arthur solve the mystery before falling into Chaney's clutches? Gertrude Olmstead, Walter James also star. 86 min. Standard; Soundtrack: Dolby Digital mono music score. Silent with music score.