The Phantom Rider helps Mary Grayson thwart a plot to steal her land.
A masked hero called "The Eagle" leads California ranchers in a struggle against Russian Cossacks who are plotting to take over California and turn it into a Russian colony.
The California-Yucatan Railroad, being built for the good of Mexico, is under siege by a gang of terrorists hoping to force its sale; no one can prove their connection to profiteer Marsden. Manuel Vega, aged co-owner, calls in the aid of his nephew James, great-grandson of the original Zorro. Alas, James seems more adept at golf than derring-do; but after he arrives, Zorro rides again! Can one black-clad man on horseback defeat a gang supplied with airplanes and machine guns?
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.
The mysterious Don Del Oro ("Lord of Gold"), an idol of the Yaqui Indians, plans to take over the gold and become Emperor. Francisco was put in charge of a legion to combat the Yaqui tribe and protect the land, but when attacked Zorro came to his rescue. Francisco's partner recognized Zorro as the hidalgo Don Diego Vega, then ask him to take over the fighting legion as his alter-ego Zorro.
The struggle over the Bellamy estate ends with Michael Bellamy accused of murder and killed on the way to prison, while his brother Abel Bellamy takes control of the estate for his own nefarious plans.
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 named after its chief villain. Doctor Satan's main opponent is the masked mystery man, "The Copperhead", whose secret identity is Bob Wayne, a man searching for justice and revenge on Satan for the death of his step-father. The serial charts the conflict between the two as Bob Wayne pursues Doctor Satan, while the latter completes his plans for world domination.
A superhero known as The Black Commando battles Nazi agents who use explosive gases and artificial lightning to sabotage the war effort.
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.
Superhero Captain America battles the evil forces of the archvillain called The Scarab, who poisons his enemies and steals a secret device capable of destroying buildings by sound vibrations.
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.
Government agents work to interfere with schemes to trick the Comanches into war with the Texans.
A new town doctor arrives at the same time as local Indians needprotection from troublemaking looters.
A man returning home after having fought in the Civil War discovers that corrupt politicians have taken over the county and are terrorizing and shaking down the citizens. He dons the costume of his ancestor, the famous Zorro, and sets out to bring them to justice.
Columbia's 33rd serial (made between "Jack Armstrong" and "The Sea Hound") was based on the character that first appeared in "Action Comics" No. 42.
This 15-chapter serial pits Batman and Robin against The Wizard, who uses a device that allows him to control machinery to hold the city hostage.
New sheriff cleans up the town. First (?) in "Mauricio Rosales" series.
Masked rider exposes the criminal misdeeds of a wealthy land-owner and his henchmen.
Don Jose disguises himself as Zorro, the masked freedom fighter, who tries to protect his people from the wrath of an evil military officer who is using his position to his own advantage.
In the first half of the 1600's, France is at war with Spain. The cousin of the king of Spain, Isabella, is held captive in the French castle, and the Count of Seville is sent to France as a diplomat. While there, he is escorted by the Three Musketeers, who discover that he has secretly made a deal with Cardinal Richelieu to disclose Spanish military secrets in exchange for Isabella's release. However, he is merely bluffing and plans to take Isabella by force. When the musketeers discover this, they come to his aid, and together the four of them work at freeing the Countess. Meanwhile, the Count doubles as Zorro to free the Spanish court from a treacherous suitor.