Government agents try to thwart smugglers, while some sort of plot unfolds, about a hidden treasure revealed by cursed coins.
A group of street kids battle a terrorist gang led by a Japanese spy.
Zudora, not knowing she's an heiress to a $20 million fortune, lives with her uncle, a mystic and detective, who covets her inheritance. She wants to marry John Storm but her uncle is against it. However, the uncle makes a bargain; if Zudora can solve the next twenty mysteries brought to him, she can marry as she chooses. Episodes 1,2 and 8, plus another unidentified chapter, survive. The rest is believed to be lost.
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.
When a deadly Nitron ray strikes Earth, Flash Gordon and his friends travel to Mars to battle Ming the Merciless and his new ally Queen Azura.
Dick Tracy's foe for this serial is the crime boss and Masked Mystery Villain The Spider/The Lame One and his Spider Ring. In the process of various crimes, including using his Flying wing and sound weapon to destroy the Bay Bridge in San Francisco and stealing an experimental "Speed Plane", the Spider captures Dick Tracy's brother, Gordon. The Spider's minion, Dr. Moloch, performs a brain operation on Gordon Tracy to turn him evil, making him secretly part of the Spider Ring and so turning brother against brother.
Tom Wayne rescues Clancy, Renard and Schmidt in the Arabian desert and they join him in going after El Shaitan, a bad guy who is never seen as he tries to wipe out the Foreign Legion. CHAPTER TITLES: 1. The Fiery Circle; 2. One For All, All For One; 3. The Master Spy; 4. Pirates of the Desert; 5. Rebel Rifles; 6. Death's Marathon; 7. Naked Steel; 8. The Master Strikes; 9. The Fatal Cave; 10. Trapped!; 11. The Measure of a Man; 12.The Value of Comrades.
This 15-chapter serial was produced by Colonel William N. Selig, the former mogul whose large assortment of wild animals became the nucleus of today's Los Angeles Zoo. Selig's ferocious fauna added authenticity to a story about yet another white goddess, Princess Elyata of Tirzah (Juanita Hansen), who comes to the rescue of Stanley Morton (George Chesebro) and his sidekick Mike Donovan (Frank Clark), a couple of Americans who foolishly wander into a village ruled by slave trader Gagga (Hector Dion).
Pretty Girl Barbara Mededith takes over her murdered brother's crusading newspaper. She also assumes the dead sibling's identity as "The Black Whip," righting the wrongs of Crescent City very much in the manner of her famous ancestor, Zorro.
A prospector is murdered by The Cactus Kid and his gang, who hope to find the murdered man's goldmine. The miner's dog, Rin-Tin-Tin, recognizes the killers, who thereafter seek to use the dog to locate the lost mine. With the help of a government agent and a young girl, Rinty saves the mine and brings the bad guys to justice.
The Shadow battles a villain known as The Black Tiger, who has the power to make himself invisible and is trying to take over the world with his death ray.
Hank Davis, foreman on a huge dam project, enlists the aid of his two flyer friends when a sinister figure known as The Black Ace leads his Mystery Squadron of masked pilots in an attempt to destroy the dam.
An adventure serial presented in 12 chapters. Inventor Thomas Edmunds uses a super plane, 'The Phantom,' to protect his new anti-gravity invention, the Contragrav, from theft.
Special Insurance-Investigator Dan Kennedy and his wonder dog, Tarzan the Police Dog, are called in to investigate the persistent robbing of a shipping-and-storage warehouse in Los Angeles.
American, Chinese and Australian agents join forces to stop the Nazis from obtaining the formula for synthetic fuel.
A mysterious criminal known as The Whispering Shadow commits crimes by means of a gang he controls by television and radio rays. Jack Norton, whose brother was murdered by The Whispering Shadow, suspects that the eerie Professor Strang - whose ghostly wax museum contains figures far too lifelike - may be involved in the crimes.
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.
An evil scientist known as "Mr. M." uses a drug he has developed called "hypnotreme" to help steal submarine equipment. Federal agent Grant Farrell is dispatched to find the mysterious villain and stop his nefarious plans.
During the latter stages of the Civil War, a gang of supposed Confederates, headed by Alex Morel (Lionel Atwill), raid all gold shipments destined for Washington from Oro Grande, California. Can they be brought to justice?
Counterfeit bills are being printed in Canada and shipped across the border hidden in blocks of ice. When the counterfeiters force engraver Bronson to make a new plate, he inscribes a tiny help message on it. Renfrew catches a henchman who has one of the new bills. A magnifying glass lets him read the message and he heads out alone to round up the counterfeiters.