Going undercover as the notorious "Waco Kid," U.S. Army Captain Jeff Packard manages to infiltrate a gang of gold-shipment thieves lead by nasty Walt Anderson. But Anderson and his gang are not the only troublemakers around: Packard must also contend with Geronimo and his Apache warriors, who are demanding guns in exchange for peace.

Columbia Pictures elevated stunt man Jock O'Mahoney to stardom in this 15 chapter western serial about the building of the transcontinental railroad. O'Mahoney played a railroad agent who uncovers the master criminal behind a series of sabotage attempts on the construction site.

The story concerns a fierce struggle over water rights. Complicating the plot is the presence of a masked desperado who is systematically killing off local ranchers.

Cattle detective, Rocky Lane, arrives in town to investigate cattle disappearances only to realize just three cows owned by eccentric inventor, Nugget Clark, are involved. However, the disappearances lead to a deeper mystery involving dynamite explosions, rampaging cowboys and a water shortage.

Arizona Ranger Larry Grant is posing as an outlaw while hunting for an outlaw gang, secretly led by Lance Corbin, that is stealing silver in Mexico and smelting it into bars for sale in the United States.

Lash Larue seeks to arrest his twin brother, known as the Frontier Phantom