Congo Bill is hired to locate an heiress lost somewhere in Africa.

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…

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…

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.

Jerry Blake (aka Federal Operator 99) teams-up with Joyce Kingston to thwart the plans of escaped crime boss Jim Belmont.

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

The British Commandos send Bob Owen to Norway to prepare for a raid. His mission also includes freeing General Heden who is being held by the Nazis. His aides include…

Jim Dorn endeavors to protect Jean McNain from a man she knows has committed a murder, Carter Snowden

Mortimer builds a fence for the cattle brought by Ken Morley. To retaliate, Slater who wants access to the land, builds a dam cutting off Mortimer’s water supply. When Ken…

El Malo, notorious Mexican bandit, forces the Mayor of Sierra Blanca, Seth Landport, to open the safe and turn over to him 2,000 pesos, which the bandit gives a promissory…