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.

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Main Cast: El Santo, Blue Demon, Víctor Junco, César del Campo, Elsa Cárdenas, Antonio de Hud, Fernando Osés, Quintín Bulnes, Alma Ferrari, María Antonia del Río

Director: Alfredo B. Crevenna

Writer: Fernando Osés

Editors: Felipe Islas, José W. Bustos

Cinematographers: Minervino Rojas, Rafael Remy

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