El Santo, the masked Mexican wrestler, investigates a series of kidnappings. He discovers that the mysterious Doctor Caroll is using the victims as part of his experiments to develop an army of monsters. Naturally, El Santo is able to overcome them all - with wrestling!
El Santo
Norma Mora
Rubén Rojo
Roxana Bellini
Claudio Brook
José Luis Jiménez
Víctor Velázquez
Jorge Mondragón
Fernando Osés
Nathanael León
Concepción Martínez
Myron Levine
Cesáreo Cruz
Juan Garza
Beny Galán
Cavernario Galindo
El Tigre del Ring
Victorio Blanco
Vicente Lara
Rubén Márquez
Antonio «Pícoro» Padilla