A crooked gambler poses as a descendant of a noble Spanish family has successfully secured court validation of a counterfeit land grant, and proceeds to drive out ranchers already settled on the land with high taxes, road tolls and violent tactics. A pair of horse sellers pitch in to help a customer, his daughter, and the other "tenant" ranchers after being roughed up by toll collectors when they refuse to pay the assessed toll.

Jungle Jim fights a lion and sharks trying to save an African village from those who would despoil it.

The mysterious Don Del Oro ("Lord of Gold"), an idol of the Yaqui Indians, plans to take over the gold and become Emperor. Francisco was put in charge of a legion to combat the Yaqui tribe and protect the land, but when attacked Zorro came to his rescue. Francisco's partner recognized Zorro as the hidalgo Don Diego Vega, then ask him to take over the fighting legion as his alter-ego Zorro.

A young Eastern lawyer, seriously injured in a stage holdup, secures the help of Hoppy, California and Jimmy in completing his mission to his woman cousin's ranch in Texas. The ranch, as are others in the same area, is being plagued by a gang called the Night Riders, while the friendly local town lawyer is trying to cajole the cousin into selling out to him. Hoppy begins by arriving in the town, separate from his pals, all spiffed up and dandified, posing as the Eastern lawyer...

A cowboy is framed for the murder of a rancher, which was committed by a landgrabber. The cowboy must clear his name and bring in the real killer.

An easy-going cowboy is mistaken by the townsfolk for a notorious gunman. The cowboy decides it would be best to leave town, until he meets the gunman's girlfriend.

The Invisible Man's grandson uses his secret formula to spy on Nazi Germany.

In this war film, set in 1817, an American Army captain searches throughout Spanish-ruled Florida for his brother who has been abducted by an evil Don. En route he begins to romance the daughter of the Don.

A crooked real estate manipulator sells worthless land on mortgage to flood refugees, then tries to profit by reselling the land to the state, committing murder in the process, as the Three Mesquiteers work to bring him and his gang to justice.

In 1942, a young paratrooper in the RAF returns to Czechoslovakia to encourage his fellow countrymen to sabotage the German war effort.