When an oil discovery is reported at Paxton, Oklahoma, Marshal Rex Allen immediately suspects that where there is oil, there is trouble. Rex arrives just as a band of desperadoes stage a bank hold-up and escape with $25,000 which ranchers have invested in prospective oil drillings.
After being shot, a dying Marshal Dawson gives Dave Hayes his badge and asks him to finish his job. Dave becomes Marshal but when Bowie, the man that shot Dawson appears, he exposes Dave as an imposter. Dave is then in trouble when Edwards incites the mob to lynch him.
On the sunless moon Io, Marshall William T. O’Niel goes toe-to-toe with the corrupt manager of a mining colony and his gang of roughnecks while investigating a rash of worker suicides.
A mysterious preacher protects a humble prospector village from a greedy mining company trying to encroach on their land.
Orphaned and left in the desert as an infant, Evil Roy Slade grew up alone—save for his teddy bear—and mean. As an adult, he is notorious for being the "meanest villain in the West"—so he's thrown for quite a loop when he falls for sweet schoolteacher Betsy Potter. There's also Nelson L. Stool, a railroad tycoon, who, along with his dimwitted nephew Clifford (Henry Gibson), is trying to get revenge on Evil Roy Slade for robbing him.
A stranger comes to town looking for his estranged wife. He finds her running the local girls. He also finds a town and sheriff afraid of their own shadow, scared of a landowner they never see who rules through his rowdy sidekicks. The stranger is a town tamer by trade, and he accepts a $500 commission to sort things out.
Trouble has been reported in Placerville where Tom Barton's brother is the Marshal. Arriving Tom finds a phoney Marshal in his brother's place. Learning that Clark is behind the all the trouble and that he is after the Madison stage line, Tom joins up with Mary Madison to fight Clark while he also looks for his missing brother.
Famed gunman Arizona Colt is sent by Moreno to rescue his daughter from the grips of Arizona's old enemy, Keane. But certain complications make the mission far more dangerous than expected.
Town marshal Alan Burnett life is saved by a stranger he meets on the trail. His rescuer turns out to be Jagade, a gunslinger just returned after years away, who finds when he gets into town that he can't abide the peace that has been settled between "his" people (i.e. the saloon-keepers, gamblers, etc.) and the righteous, "respectable" folk.
Marshals Lash and Fuzzy are sent to get the goods on Duce Rago. To join Rago's gang, Lash decides to pose as an outlaw by wearing the known belt buckle of a notorious outlaw.
A singing territorial ranger (Gene Autry) spots his younger brother in an outlaw gang.
Former buffalo hunter and entrepreneur Wyatt Earp arrives in the lawless cattle town of Wichita Kansas. His skill as a gun-fighter makes him a perfect candidate for Marshal, but he refuses the job until he feels morally obligated to bring law and order to this wild town.
An upstart outlaw baits a legendary gunslinger, now a marshal in love with a saloon keeper.
Texas Rangers Tim Holt and Richard Martin are dispatched to halt a gang of masked outlaws terrorizing the frontier. Infiltrating the gang, Holt and Martin learn that the raiders are operating altruistically, robbing from the rich to give to the poor.
The territorial governor asks the Lone Ranger to investigate mysterious raids on settlers by Indians who ride with saddles. Wealthy rancher Reese Kilgore wants to mine silver on Spirit Mountain which is sacred to the Indians.
Local "patriot's league" leader secretly kills off ranchers, buys up their estates, which are undermined with tin ore; Marshal and singing cowpoke team up to find villain and motive.
Bat Masterson's old friend Billy Burns convinces him to become marshal of Liberal, Kansas and help the residents fight drought and a destructive range war.
Sent to investigate a payroll robbery, Marshall Rocky meets his old friends Ken, Eddie, and Max. He has the serial numbers and when Pop puts on his medicine show they get one of the bills. This enables Ken to see through Sorrell's scheme that threw the blame on an innocent rancher and he sets out to prove it. Written by Maurice Van Auken
In Old Wyoming, a gang is plundering stagecoaches of shipped currency and a crusading newspaper editor is trying to get the local marshal replaced, because of his apparent failure to catch the gang, which seems to disappear into thin air after every robbery. The situation escalates when one of the stage drivers is mortally wounded; so the marshal sends for his friends, the Range Busters, to help him catch the criminals. Meanwhile, even the marshal's fiancee, the editor's daughter, turns against him in favor of an aggressive agitator for law and order - who secretly is leading the robber gang.
After robbing a bank Murphy assumes the identity of his pursuer, a famous US Marshal, when he stumbles into a town and is confronted by the local judge, Matthau. Murphy is forced to remain as the new Marshal; an old flame, Scala, nearly unmasks him by accident, only to be forced to assume the ruse of being Murphy's wife. The "couple" given a house and respectability, which neither has had before. They maintain the charade to avoid hurting a young orphan boy, Matthau's ward. Scala is torn by her loyalty to boyfriend planning to rob the bank and growing feelings for Murphy