Government agents try to thwart smugglers, while some sort of plot unfolds, about a hidden treasure revealed by cursed coins.

Reporter Brenda Starr and her photographer Chuck Allen get involved in a search for the loot from a payroll robbery. Cliffhanging action and...

Prior to the United States' involvement in World War II, the masked vigilante Spy Smasher fights Nazi agents operating within the US, led by the...

An expedition arrives on an uncharted jungle island to rescue the local natives, led by a jungle boy, from a volcano that is about to erupt.

Two British officers are assigned to collect information to convict Captain Kidd of piracy.

A young girl journeys to Africa to find her father, an explorer who vanished in the jungle.

A police detective is caught up in a plot to steal two million dollars in bonds.

Disaster seems imminent when scientists discover that the planet Mongo is about to crash into Earth. Luckily, heroic young Flash Gordon is on hand to...

A fabulous jewel known as the 'Dark Star' is stolen; a pastor's daughter gets involved, falling into the depths of a spy plot concerning war plans...

Greedy traders have kidnapped a researcher, hoping he will reveal the location of a treasure in a hidden village. Family and friends of the...

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

An accomplished aviator sets out to locate treasure hidden by one of his ancestors. He encounters interference from various adversaries.