Spell of the Circus

A young heiress of an American gun factory is threatened by a masked man after her father was murdered. This criminal might be a member of her family or a German agent, who wants to get information about the factory's products, perhaps his mystery has a combined solution - we will probably never know...

The evil and masked "Gargoyle" is sabotaging all of America's industrial plants. It is up to the Spider to save the country.

Prospector Henry Tolliver disappears and his son "Wild Bill" Tolliver comes looking for him.

A new town doctor arrives at the same time as local Indians needprotection from troublemaking looters.

Tom King Jr. seeks to discover who murdered his father, a Texas Ranger; the trail leads to a network of Axis spies.

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.

A young girl journeys to Africa to find her father, an explorer who vanished in the jungle.

Mystery and adventure, surrounding a stolen rubber harvest.

Pulp hero "The Spider" seeks to destroy all criminals. In this serialized adventure, he battles The Octopus, who intends to replace the government of the United States.

Mandrake and his team attempt to prevent "The Wasp" from stealing and using a new Radium invention.

Kit Cardigan seeks the killer of his father...among other plot threads leading up to the famous historical incident.

A bunch of waterfront youths pursue the Sea Raiders, a gang of saboteurs.

Dara and Karan, the sons of two of the victims of dacoit Jogi Thakur, wait many years to exact their revenge. When the Thakur's colleague Raja Singh cheats him and runs away with his loot, Jogi is arrested and sentenced for life imprisonment. Years later Jogi escapes from the prison to get hold of Raja and take back his booty, but finds his face on all the posters in the village to find him dead or alive with a reward of fifty thousand rupees. When Karan gets to know Jogi has escaped he goes looking for him. Dara also join hands with Karan to even the score with the dreaded dacoit.

A Secret Service agent seeks his missing brother in Africa, and finds his mission complicated by ivory thieves, a girl with a mysterious past, and a troublesome gorilla.

A Martian invader crashes his spaceship conveniently close to the workshop of a scientist who is developing an interplanetary craft. If the extraterrestrial Purple Monster can complete the rocket ship and return to Mars, he will be able to start a full-scale invasion of Earth. Good thing Craig Foster sets out to thwart the Monster's mission!

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.

Disaster seems imminent when scientists discover that the planet Mongo is about to crash into Earth. Luckily, heroic young Flash Gordon is on hand to lead an investigative mission into outer space and onto the speedily approaching planet. There, he and his best girl, Dale, who is along for the ride, learn that Ming, the devious ruler of Mongo, has purposely put the planet on a collision course with Earth, and only Flash can stop him.

Government agents work to interfere with schemes to trick the Comanches into war with the Texans.

Before the outbreak of WWII, Nazi sympathizers plot to undermine America.

A movie serial in 13 chapters: Some swampland becomes valuable, and various factions squabble over ownership of it.