When Ranger Raymond is killed during a stage holdup, Wells Fargo Agent Whip Wilson assumes his identity.

With his assistant, Laura Hutchinson, Dr. David Conway develops a device to advance the fledgling science of earthquake prediction. After forecasting a large trembleor that will rock California within twenty-four hours, Conway cannot persuade the Governor to act. When the prediction proves true and further tests indicate that there are more quakes to come, Conway and Laura seek to perfect their device. Subsequent tests deep within Carlsbad Caverns discover an unknown element—E-112—that is responsible for the earthquakes and threatens to destroy the globe if it ever reaches the surface. The team determines that with only four weeks until Armageddon, the race is on to neutralize the killer element before it takes a devastating toll.

Jesse James wants to start a new life in a new location, but quickly finds himself wrapped-up in protecting townsfolk from the machinations of evil oilmen.

Feature version of the 1949 serial, KING OF THE ROCKETMEN: Young member of scientific group uses new rocket-powered flying suit to thwart shadowy saboteur known only as "Dr. Vulcan".

Prof. Millard pretends to be dead and helps Jeff King ferret out Vulcan, the evil traitor at the science academy. Donning his Rocket Man costume King goes from one hair raising rescue to the next in order to keep the newly invented Decimator out of the clutches of Vulcan and his minions.

Janet Spencer is driving down a country road when one of her tires blows out. This seemingly innocuous, everyday occurrence leads Linda into a labyrinth of murder, blackmail and intrigue.

A private detective is offered a job protecting a rich business man from suspected blackmail. Before he can accept the case a murder is uncovered.

A Tornado in the Saddle starred Russell Hayden as the new sheriff of Crestview. Hot on the trail of a gang of claim jumpers led by Dalton and Slim, the novice lawman also has to deal with hotheaded wrangler turned deputy Bob Wilson, whom he is constantly forced to fight, but only after prudently removing his sheriff's star.

When Rangers Lucky and his brother chase outlaws, the brother is killed. To find the killer Lucky quits the Rangers and robs the bank. This gets him into the outlaw gang where he learns of their next raid. Sneaking out at night he tells his girl friend who must now convince the Sheriff that Lucky is not an outlaw and that he must sent his men out to catch the gang.

Two ex-cons plan to kill the range rider marshal who sent them to prison and, when their plan fails, join forces with their former boss, a crooked saloon owner who has the same idea.