Aline Towne

Strategic targets on Earth are being destroyed by an unknown weapon. Government security head Henderson suspects it's an "atomic ray" originating from the moon! He assigns Commando Cody, scientist and man of action with a secret flying suit, to investigate. Soon, Cody is battling Earth thugs in the pay of Krog the moon man and making trips in his experimental rocket to the moon itself, in a perilous and all but singlehanded effort to thwart the planned invasion of Earth. (imdb)

The invaders come to Earth to create an H-bomb to blast Earth out of orbit so that Mars can take its place. (imdb)

Evil villain plots to take over the world using an army of invisible soldiers. (imdb)

The 57th of Republic's 66 serials is filled with stock footage from some of that company's previous "Zorro" serials, primarily 1944's "Zorro's Black Whip", so a lot of the footage finds Ken Curtis wearing the same costume as Linda Stirling and (mostly) her double Babe DeFreest wore in that serial. Disney now owned the rights to the Zorro character, but Republic wasn't about to let all that footage go to waste when all they had to do was create a character called Don Daredevil. (imdb)

The United Nations has island trader Tom Rogers (Harry Lauter) and Vivian Wells (Aline Towne), daughter of a schooner captain, spearheading the effort to keep subversive native groups from starting revolutions in Burmatra and neighboring Asian countries, which, thank you very much, they accomplish by the end of 12 episodes.

Dangerous climate changes are ravaging Earth and the U.S. government requests an investigation by masked super-scientist Commando Cody. He discovers that the disasters are being caused by space-alien forces from unknown planetary origins. (imdb)