A young heiress is kidnapped by two aspiring thieves who are then captured by a mad scientist. It's up to the police, Santo, and Blue Demon to rescue them.
El Santo
Santo el Enmascarado de Plata
Blue Demon
Víctor Junco
Profesor
César del Campo
Tony
Elsa Cárdenas
Nora
Antonio de Hud
Pedro
Fernando Osés
Santos
Quintín Bulnes
Lucky
Alma Ferrari
Susana
María Antonia del Río
Lorna
Carlos Suárez
Ismael Ramirez
