Director: René Cardona
A mysterious killer has been strangling women in a variety theater, and the police decide to bring Santo into the investigation. Santo suspects the killer is hiding undercover as one of the theater employees and must discover his true identity before more women are murdered.
El Santo
Santo, el Enmascarado de Plata
María Duval
Laura
Roberto Cañedo
The Great Goudini
Ofelia Montesco
Lilian
Carlos López Moctezuma
Inspector Villegas
Begoña Palacios
Irene
Alberto Vázquez
Javier
Eric del Castillo
Jerry Marcos
Emma Arvizu
Claudia
Julián de Meriche
Julian Fiorelli
Nathanael León
Strangler's Henchman (uncredited)
Fernando Osés
Wrestler (uncredited)
Milton Ray
Ray
Mayte Carol
Odete
Gloria Chávez
Corista rubia
Julio Ahuet
Agente policía
Manuel Dondé
Policía encubierto
José Cora
Guillermo Bravo Sosa
Portero
Salvador Terroba
Agente policía (as Salvador Terrova)
El Santo
Santo, el Enmascarado de Plata
María Duval
Laura
Roberto Cañedo
The Great Goudini
Ofelia Montesco
Lilian
Carlos López Moctezuma
Inspector Villegas
Begoña Palacios
Irene
Alberto Vázquez
Javier
Eric del Castillo
Jerry Marcos
Emma Arvizu
Claudia
Julián de Meriche
Julian Fiorelli
Nathanael León
Strangler's Henchman (uncredited)
Fernando Osés
Wrestler (uncredited)
Milton Ray
Ray
Mayte Carol
Odete
Gloria Chávez
Corista rubia
Julio Ahuet
Agente policía
Manuel Dondé
Policía encubierto
José Cora
Guillermo Bravo Sosa
Portero
Salvador Terroba
Agente policía (as Salvador Terrova)
El Santo
Santo, el Enmascarado de Plata
María Duval
Laura
Roberto Cañedo
The Great Goudini
Ofelia Montesco
Lilian
Carlos López Moctezuma
Inspector Villegas
Begoña Palacios
Irene
Alberto Vázquez
Javier
Eric del Castillo
Jerry Marcos
Emma Arvizu
Claudia
Julián de Meriche
Julian Fiorelli
Nathanael León
Strangler's Henchman (uncredited)
Fernando Osés
Wrestler (uncredited)
Milton Ray
Ray
Mayte Carol
Odete
Gloria Chávez
Corista rubia
Julio Ahuet
Agente policía
Manuel Dondé
Policía encubierto
José Cora
Guillermo Bravo Sosa
Portero
Salvador Terroba
Agente policía (as Salvador Terrova)