When the ancient continent of Mu sank beneath the ocean, some of its inhabitant survived in caverns beneath the sea. Cowboy singer Gene Autry stumbles upon the civilization, now buried beneath his own Radio Ranch. The Muranians have developed technology and weaponry such as television and ray guns. Their rich supply of radium draws unscrupulous speculators from the surface. The peaceful civilization of the Muranians is corrupted by the greed from above, and it becomes Autry's task to prevent all-out war, ideally without disrupting his regular radio show.

A cowhand named Bob Blake visits with Sally Thompson and her kid-brother, Jimmy, on their hard-scrab...

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

Amiable slackers Bill and Ted are once again roped into a fantastical adventure when De Nomolos, a v...

Wealthy rancher Bick Benedict and dirt-poor cowboy Jett Rink both woo Leslie Lynnton, a beautiful yo...

Jim Killian arrives in a small Arizona town hoping to establish a peaceful life as the local preache...

It has been ten years since The Battle of the Breach and the oceans are still, but restless. Vindica...

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

On the sunless moon Io, Marshall William T. O’Niel goes toe-to-toe with the corrupt manager of a min...

The truncated feature version of the 4½ hour serial about a mad scientist who attempts to rule the w...

In a futuristic world where women run the show, a shy plastics designer buys a female robot, so he g...

After the entire flora goes extinct, ecologist Lowell maintains a greenhouse aboard a space station ...

Starship C57D travels to planet Altair 4 in search of the crew of spaceship "Bellerophon," a scienti...

Aliens have landed and are hiding on Earth, but need Earth’s scientists to help them fight an inter-...

A veterinarian and a novelist compete for the heart of a lady rancher.

Monogram added several songs and a barn dance to this otherwise standard Johnny Mack Brown hay burne...

A renegade Vulcan with a startling secret hijacks the U.S.S. Enterprise in order to find a mythical ...

Renegades trying to get the army to abandon their fort get the Indians addicted to whiskey, then con...

The explorer craft USS Palomino is returning to Earth after a fruitless 18-month search for extra-te...

In the midst of societal conflict in the futuristic city of Metropolis, Kenichi and his uncle Shunsa...

In the 56th (and next-to-last serial) made by Columbia Pictures, Montana Deputy Dan Lawson, posing a...