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".

Disaster seems imminent when scientists discover that the planet Mongo is about to crash into Earth....

The nefarious Dr. Fu Manchu searches for the keys to the tomb of Genghis Khan, in order to fulfill a...

The heirs of Anton Benson are searching Bensonhurst for hidden gold; they are joined by a reporter, ...

A movie serial in 12 chapters: After gold is discovered in the town of Nugget, the titular band of ...

A serial in 12 chapters. Tarzan goes to Guatemala to find his lost friend, D'Arnot. On the way he h...

A young heiress of an American gun factory is threatened by a masked man after her father was murder...

Japanese spies attempt to subvert America's war effort; G-Men attempt to thwart their plot.

Rosalind Joy is a constantly imperiled heiress to a fortune in gold. An 18 part adventure serial

Elmo finds himself in 18 different hair raising and dangerous adventures always escaping in the nick...

Mr. Lincoln's tremendous physique fits him especially for serial work, where strength and daring are...

Eddie King goes up against a villainous circus owner in this action adventure which was directed by ...

Professor Campbell's expedition into the hills of Libya obtains a papyrus which might reveal the hid...

A beautiful young woman is a daring master thief. She meets the young millionaire Thomas Babbington ...

A movie serial in 12 chapters: The famous comic strip character is on a mission to protect a secret...

On the American frontier in the last decades of the 19th century, Billie is a female cowboy who figh...

When the unscrupulous Carlos Manning discovers that an old Spanish land grant recently unearthed wil...

The Timber Queen follows Ruth Rowland as the inheritor of a wealthy timber business who tries to st...