Director: Federico Curiel
Cast: Germán Robles, Julio Alemán, Domingo Soler, Aurora Alvarado

Plot: The Professor, dedicated to the belief that supernatural beings such as vampires and werewolves do not exist, has been re-elected chairman of a local committee dedicated to proving this to the masses. But that night he finds a visitor inexplicably in his study, who claims to be the 400 year old son of Nostradamus the Alchemist and demands that he be acknowledged publicly as such so that he may rebuild his father's cult.