The evil and masked "Gargoyle" is sabotaging all of America's industrial plants. It is up to the Spider to save the country.
Superman battles a criminal mastermind and his robot army.
Robbers target a special train carrying a billion dollars worth of gold, and the only one who can stop them is Superman!
A frozen Tyrannosaurus rex is found and put on display in a museum, but when he thaws out and revives, Superman has to stop his rampage!
Criminals with rocket powered car loot and extort the city, and only Superman can stop them!
Prior to the United States' involvement in World War II, the masked vigilante Spy Smasher fights Nazi agents operating within the US, led by the treacherous sabotage leader codenamed The Mask.
When police interfere with a reckless scientist's experiment, it creates a deadly meteor shower only Superman can stop.
A scientist uses an earthquake machine to threaten the city, and only Superman can stop his extortion plan!
Superman comes to the rescue when a volcano erupts.
When things go wrong at the circus, it's up to Superman to stop the escaped animals.
A superhero known as The Black Commando battles Nazi agents who use explosive gases and artificial lightning to sabotage the war effort.
Superman's reputation is tarnished when a crook begins committing crimes in a Superman costume.
Using Clark Kent as a cover, Superman travels to Japan as a saboteur during the war.
Superman has to thwart wartime saboteurs tampering with things at the Metropolis Munitions Plant...who have captured Lois Lane and loaded her into a torpedo!
Egyptologists are attacked by mummies, drawing the attention of Superman.
Superman discovers a secret Nazi base in the jungle.
Superman has to save Lois Lane from a cult of hawk-people in an homage to Edgar Rice Burroughs's "At the Earth's Core".
Japanese master spy Daka operates a covert espionage-sabotage organization located in Gotham City's now-deserted Little Tokyo, which turns American scientists into pliable zombies. The great crime-fighters Batman and Robin, with the help of their allies, are in pursuit.
A double agent trying to deliver information to Washington, D.C. is chased by Nazi operatives.
Two expeditions are trying to reach the Lost City of Zoloz -- one headed by Professor Davidson, a scientist who wants to establish an archaeological site, and the other by a greedy treasure hunter who wants to keep the fabled treasures of the city for himself. An agent of a foreign power also wants to establish a secret airbase there, so he stirs up the natives against The Phantom, who has been able to get them to stay peaceful so far. When The Phantom is murdered, his son takes his place and sets out to restore peace to the jungle and stop the agents' and the treasure hunters' nefarious plans.