Mysterious Doctor Satan (1940)

Three earthlings visit the planet Mongo to thwart the evil schemes of Emperor Ming the Merciless.

A criminal mastermind known as The Crimson Ghost is out to steal a device called the Cyclotrode, which can short-circuit all electrical current on the planet.

Hired to investigate forged bonds, Charlie is thwarted by the murder of his undercover agent, but the arrival of son Lee helps him uncover the true culprits.

After hapless pianist and ex-con John Elman is framed for murder, he is resurrected by a scientist after his execution.

To protect a magic talisman from being used for evil, a boy is given the power to become an adult superhero with a single magic word.

A mad scientist working in the South American jungle miniaturizes his colleagues when he feels his megalomania is threatened.

Crash Corrigan, a recent graduate of Annapolis, and Diana, a go-getting reporter, join Professor Norton for a search for the source of a string of earthquakes, Atlantis. They ride Prof. ... See full summary »

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, ... See full summary »

A newspaper publisher and his Korean servant fight crime as vigilantes who pose as a notorious masked gangster and his aide.

A medical researcher visits the deserted home of a pioneer in cryogenic science who disappeared 10 years earlier and finds him frozen in ice but still alive.

The masked hero leads a fighting force to fight a villian who plots the conquest of The Republic of Mexico.

Alan Armstrong, aka Spy Smasher, battles a Nazi villain known as The Mask, who heads a gang of saboteurs determined to spread destruction across America.