Beautiful Silvia and Sandra disappear mysteriously at the Bermuda Triangle. Santo, Blue Demon and Mil Mascaras go into action to try to find them. Soon they find out that evil Scientist Dr. ... Read allBeautiful Silvia and Sandra disappear mysteriously at the Bermuda Triangle. Santo, Blue Demon and Mil Mascaras go into action to try to find them. Soon they find out that evil Scientist Dr. Gro has developed a device to make people and objects to disappear blaming the famous vani... Read allBeautiful Silvia and Sandra disappear mysteriously at the Bermuda Triangle. Santo, Blue Demon and Mil Mascaras go into action to try to find them. Soon they find out that evil Scientist Dr. Gro has developed a device to make people and objects to disappear blaming the famous vanishings of ships, airplanes and human beings on Mother Nature.
- Blue Demon
- (as Blue Demon)
- Princess Soreida
- (as Gaynor Kote)
- Yawar
- (as José Luis Elizondo)
- Blue Demon
- (voice)
- Representante gobierno
- (uncredited)
