John Martin is a government agent working under cover. Leading citizen Morgan calls in gunman Galt who blows Martin's cover.
U.S. Marshal Dave Upjohn arrives in Sundown to investigate reports of lawlessness.
Wounded while stopping the James gang from robbing the local bank, a cowboy wakes up in the hospital to find that he's been elected town marshal. He soon comes into conflict with the town banker, who controls everything in town and is squeezing the townspeople for every penny he can get out of them.
Hoppy goes undercover as a gambler from the East when Bar 20 cattle are stolen by unknown rustlers. Brennan/Talbot are twin brothers (one a casino owner, the other a rancher) and Hoppy believes they provide alibis for each other while one is out committing crimes. Hoppy gets a job in the casino to learn more but is exposed when a gambling gunslinger notices him.
A crusading newspaper editor recruits his old friend Hoppy to take the job of Marshall in a town rife with vice and murder directed at helpless miners.
A tough marshal with political ambitions leads an elite posse to capture a notorious train robber and his gang.
Brothers Dan and Neil Hammond return to Texas after the Civil War. Ambitious Dan turns to rustling and then shady land deals to build an empire. Being held for a murder, he is rescued from a lynch mob by Neil, who is now the Marshal, but there is eventually a falling out between the brothers, good triumphing over evil.
When a gang of ruthless claim jumpers brutally murders his miner father, a gunman known as the Silver Kid joins forces with the local marshal to free the tiny town of Silver City from the clutches of the dastardly villains.
A Marshal must face unpleasant facts about his past when he attempts to run a criminal gang out of town.
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.
Three outlaws on the run discover a dying woman and her baby. They swear to bring the infant to safety across the desert, even at the risk of their own lives.
Outlaws are in control of the land so the town of Clayton City writes the governor for an honest marshal. That marshal is Frank Lane, who brings his son Rocky with him.
A marshal tries to bring the son of an old friend, an autocratic cattle baron, to justice for the rape and murder of his wife.
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.
Valentine Casey is a Marshal in the desolate Tucson territory of the early 1900s. On Christmas Eve, his outlaw family pays him a disturbing visit. He must confront the sins of his past. He and his partner, U.S. Christmas, journey through the desert to a small town that the ruthless Henry Clan has hit in order to save Casey's love, Adelyne.
Tom Benner controls the town and the water supply. When his stooge Mayor rebels, he has him killed and replaced with Bullseye Johnson who immediately brings in Matt Canway as the town marshal. Conway doesn't carry a gun but he is soon on to Benner and out to prove that Benner has altered the survey lines to obtain the water rights.
Finding a man alone in the desert, Marshal Tom is relieved - of his horse, clothes and water. When he catches up to Raven, he finds him dying from drinking bad water. When he gets to Gunsight, everyone thinks that he is the outlaw Raven and he plays it out so that he can end lawlessness.
A bandit kidnaps a Marshal who has seen a map showing a gold vein on Indian lands, but other groups are looking for it too, while the Apache try to keep the secret location undisturbed.
U.S. Marshals "Nevada" Jack McKenzie and "Sandy" Hopkins go undercover to bust a gang of stagecoach robbers in this vintage Western serial. Nevada infiltrates the gang, while Sandy works as a cobbler in town, keeping an ear open for local gossip as they try to flush out the inside man tipping off the crooks.