Rough Riders of Durango

A man has kidnaped an engraver and has him forging Mexican bills. He captures wild horses supposedly to sell for hides but uses them to transport the bills across the border. Police captain Juan Reyes (Richard Avonde) is posing as a bandit to uncover the counterfeiters smuggling fake pesos into Mexico, and is assisted by feisty youngsters Red (Michael Chapin) and Judy (Eilene Janssen), who are trying to protect the wild horses being used by the gang. The kids suspect that rancher Big John Harkins (Roy Barcroft) is the leader of the gang and that he is forcing Mexican artist Espinosa (Julian Rivero) to help him.

After being hit by rustlers, a group of Montana ranchers asks the governor to send state rangers for protection. State Ranger Rocky Lane becomes involved in a mystery surrounding a gang of horse rustlers and a young rancher who is blamed falsely for a killing. Lane helps uncover the real killers and unmasks the ringleader of the rustlers.

Jesse James wants to start a new life in a new location, but quickly finds himself wrapped-up in protecting townsfolk from the machinations of evil oilmen.

Five people have a part of a map leading to Billy the Kid's treasure. When one of them is killed, Rocky Lane has a plan to find the killer.

When the unscrupulous Carlos Manning discovers that an old Spanish land grant recently unearthed will leave a huge section of California real estate to the heirs of Don Quantero, he employs Mel Donovan and his killer henchmen to murder them all. That will leave Manning as the sole heir to millions. However, Delores Quantero tumbles to this plot and enlists the aide of two-fisted reporter, Cliff Roberts to save all her relatives

Arizona Territory is in the grip of outlaw terror and killer outlaws, secretly organized by Hulon Champion, who covers his power ambitions with the guise of a respectable firearms merchant. Hoping to eradicate the lawlessness plaguing the newspaperman Fred Gately prints a letter asking the president to visit the area. But Fred's killed by secret gang leader Champion, who also plans to assassinate the president. Undercover officer Rocky Lane teams with his assistant, Nugget, and Fred's spunky daughter to combat Champion's head gunslinger.

Stock-footage from Republic Pictures' earlier Zorro serials was served up once again in this 12 chapter cliffhanger, this time without the financially strapped studio having to credit Zorro creator Johnston McCulley or pay any royalties. Zorro simply became "Don Daredevil" (Ken Curtis), a foppish Easterner by day turned masked avenger by night. Like his not too distant relative, Don wore his disguise in order to battle nasty Roy Barcroft who, under a forged Spanish land grant, attempts to take over the surrounding ranch land.

An escaped criminal impersonates a Police Commissioner, causing no end of trouble to a determined Federal Agent.

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.

The war lords of a potential enemy of the US has the spy ring, led by John Baroda, the Spy King and his aide Nitra, sabotaging the plans for a vast defense system of radar stations along the American borders. Radar Defense Bureau operative Chris Calvert comes to the rescue of a brilliant radar scientist, Joan Hughes, who has been kidnapped by Baroda henchmen in chapter 1 ("The Fatal Fog"), and the two battle together before putting an end to the Spy King in the aptly-named chapter 12, "Day of Reckoning".

Two federal agents battle a gang that hijacks trucks carrying materials vital for the security of the country and sells them to foreign powers.

An Indian rug is the key to the location of a lost treasure. When the rug's owner is murdered, it becomes a case for Forest Ranger Steve King

In Africa, a deceased medical missionary's daughter in Africa carries on her father's work. Before long, she finds herself in danger from crooks and a local witch doctor.

Crooks discover a Genghis Khan treasure ship on the Canada-Alaska border but the treasure is hidden somewhere on land. In their efforts to find the hidden treasure they resort to murder and sabotage to stop the construction of the Alcan highway which will bring homesteaders to the area. Sergeant Royal of the Royal Canadian Mounted Police battles through 12 episodes to find the crooks and to learn the identity of their mysterious leader known only as 'The Boss'.

Feature version of the 1949 serial, KING OF THE ROCKETMEN: Young member of scientific group uses new rocket-powered flying suit to thwart shadowy saboteur known only as "Dr. Vulcan".

Although ostensibly the grand-son of the legendary hero, Clayton Moore's Ken Mason is little more than a cowboy in a black mask in this 12 chapter Republic serial. Mason, the head of the telegraph line work crew, assumes his ancestor's trade-mark mask (but not whip) in order to prevent a local czar (Roy Barcroft) from sabotaging the burgeoning telegraph line. Pamela Blake, a brunette starlet formerly known as Adele Pearce, played Mason's imperiled girlfriend, and the serial also benefitted from the usual competent work of Republic's great stunt-performers, including Dale van Sickel, Tom Steele, Eddie Parker, and Joe Yrigoyen.