Santo goes up against the vampire Baron Brakola, who has returned to seek vengeance on the descendants of the Knight in the Silver Mask (Santo's colonial era ancestor).
El Santo
Santo
Fernando Osés
Baron Brákola
Mercedes Carreño
Silvia (as Mercedes Carreño)
Antonio de Hud
Eduardo
Andrea Palma
Rebeca's Mother
Ada Carrasco
Aurora
Susana Robles
Rebeca
