Santo goes up against a mad scientist and a ranch owner who are turning immigrants into mind controlled zombies.
El Santo
as Santo
Miguel Ángel Fuentes
as Monk, capataz
Gerardo Reyes
as Gerardo
Carmen del Valle
as Azucena
Carlos Suárez
as Carlitos
Jean Safont
as Dr. Sombra
Federico Falcón
as Fernando
Sarita Gómez
as Florecita (as niña Sarita Gómez)
Fernando Yapur
as Dr. Sombra
César Gómez
as
Guillermo Ayala
as Bracero asesinado
Abel Casillas
as
