A mad scientist named Dr. Satan plots to steal key pieces of technology to enable him to build an army of robots based on his prototype to conquer America. The only one standing in his way is Bob Wayne, who fights Satan as the enigmatic Copperhead. Mysterious Doctor Satan is a 1940 film serial...
Knowing that is contains valuable helium gas, a gang of bad guys first tries to purchase the ranch which Gene straw-bosses. When that fails, they lay a hidden pipeline to snag the gas.
The nefarious Dr. Fu Manchu searches for the keys to the tomb of Genghis Khan, in order to fulfill a prophecy that will enable him to conquer the world. His nemesi, Dr. Nayland Smith and his associates fight to keep the evil doctor from getting his hands on the keys. In 1943 the serial was edited...
Dr. John Meredith has been driven from civilization by the criminal activities of his twin brother Bradley Meredith. With his infant daughter, he settles in the African jungle, where his ability to cure the native ills has resulted in his virtual control of the Masamba tribes, who possess vast...
Brass Bancroft and his sidekick Gabby Watters are recruited onto the secret service and go undercover to crack a ruthless gang that smuggles illegal aliens.
When the bank is robbed, Gene and the boys are singing nearby and the Chief arrests them as gang members but lets them go thinking they will lead them to the others.
A team of two-fisted insurance investigators (one of whom disguises himself as The Masked Marvel) endeavor to discover and thwart the loathsome saboteur Sakima.
Claire Forrest seeks her kidnapped scientist father, hidden somewhere on Mystery Island. He is held and forced to work on diabolical inventions by Captain Mephisto, a costumed villain.
Sheriff is aided by Laramie who pretends to be an outlaw to infiltrate a gang of bootleggers. Laramie is attracted to Ellen, who is trying to activate an old mine. He helps her with the mine and captures the bootleggers.
A man escapes from prison, then joins up with a gang of stage robbers while at the same time working as a deputy in a distant town, hoping to ultimately find the outlaw who killed his father during a robbery years ago.
