In this Mexican sci-fi fantasy, big beefy Martians invade the earth. Ostensibly, they have come to warn people about the dangers of nuclear testing...

Santo fights a group of phony spiritualists who are trying to scam his god-daughter out of her 6 million peso inheritance.

Men are turning up dead after receiving anonymous threats that include the date of their deaths. The latest person to receive one of these threats...

The Blue Demon faces a murderous satanic hypnotist.