Ben Haddock, a recently hired trail boss, is fired by Red Emerson for dating his daughter. The two men have an argument over the money owed to the foreman resulting in the Ben shooting Red and taking the money he feels he is owed. Travis rides out to arrest Haddock but is stung by a scorpion and cowhand flees leaving the ranger to die.

A man whose wife was killed during an Indian raid is incensed when his brother takes an Apache woman to be his wife and encourages other Indians to settle in the town of which he is one of the founders. The man takes his racial prejudice so far as to hire a gang of gunslingers to drive the Indians from the town and his brother's wife along with them.

A meek, hen-pecked bank teller is accused of complicity in a bank hold-up when he is the only employee in the bank when an outlaw gang robs the Bisbee bank. The teller is so taken with the attention and publicity his case is garnering that he refuses to admit that he had nothing to do with the crime. Rynning is convinced of the man's innocence and grants the gang's leader a 24-hour immunity to testify at the man's trial.

Ralph Kincaid, a wealthy rancher, catches his son, Juro, stealing money from his desk so he can pay his gambling debts and brutally beats him. The next day, the father is found murdered and the evidence seems to point to his son as the killer. During the trial, Captain Rynning discovers incontrovertible that the young man was incarcerated in another town at the time of the murder after suffering from a blackout. The ranger thinks the explanation is too pat, though, and searches for Juro's murderous accomplice.

A poker game in Nogales, Arizona turns sour when one of the participants is accused of crooked dealing. After the accused shoots the accuser and makes off with all the cash, the manhunt for the perpetrator quickly leads to an arrest - the real killer's identical twin brother. The rangers desperately search for murderer before a lynch mob hangs an innocent man.

The economic recession afflicting Arizona after the Spanish-American War hits the young veterans returning to civilian life the hardest. A young veteran, his sister and three friends try to make a go of farming by squatting on land claimed by other homesteaders resulting in bloodshed. The sister decides to become a dance hall girl to raise enough money for the group to eat with only to find out that the hall's owner is interested in more than her ability to dance the Can-Can.

The newspaper editor of Wilcox asks the Rangers for help, and two of them are dispatched to the town. However, when they get there they find the editor has been lynched and is hanging from a tree.

A gang of desperadoes cuts a swath of murder and robbery across the whole Arizona Territory, laughing at the Rangers attempts to bring them to heel. Since the gang uses every trick in the book to cover their tracks, Rynning hires an Apache tracker to find the outlaws.

A member of the notorious Wild Bunch bandit gang escapes from Ranger Clint Travis' custody, resulting in his being fired. Furious, Travis sets out to take on the whole gang and salvage his career and reputation.

Clint Travis goes undercover as a gun smuggler to stop Mexican revolutionary Juan Morales' plans to topple the Mexican government.

The Rangers set out to stop a smuggling ring that's bringing Chinese immigrants across the Colorado River.

A gang of convicts has escaped from prison, but Capt. Rynning's can't get any more men to help capture them.

When Clint Travis is falsely accused of Murder. Rynning sends him into Galioro Mountains to prove his innocence by finding the cattle rustlers who actually committed the crime.

Travis goes after escaped con Cain Devers, a bank robber and counterfeiter who is using his counterfeit plates as part of a plot to destroy his father and younger brother.

A Ranger suddenly resigns without explanation. Rynning tries to discover what's behind it and finds that the man is hiding a secret that he won't take a chance on anyone finding out about.

The wife of a preacher who recently established a mission for Apaches living near Galeyville receives a suspicious telegram and fears her husband has been murdered. Travis learns that a lynch mob hung two Indians accused of being horse thieves and the minister who tried to prevent the hanging. He also discovers that, in a moment of cowardice, the town sheriff failed to prevent the hangings.

Travis poses as an outlaw in what seems to be a very peaceful valley to try to find the reason behind the disappearance of a U.S. Marshal.

An Apache inherits a small ranch and his white neighbors don't care for the idea of having an Indian for a neighbor.

Rynning and Travis investigate when a number of women are murdered in a small Arizona town. Since the circumstances surrounding each murder are identical, the rangers fear that they are trying to capture a psychopathic misogynist. When Travis finds a footprint with a distinctive heel mark near the body, the lawmen search the surrounding area for the owner of such a boot.

In order to prevent the hanging of their gang members a family of outlaws kidnaps the daughter of the commander of an army post instructing him to release his prisoner or the young woman will meet the same fate. When the army carries out the execution anyway, Rynning, Travis and two undercover Army officers must free the girl before word of the gang members death leaks out.

Ranger Joe Pierce captures a pair of outlaws and turns them over to a sheriff for safe keeping. Sheriff Brennan recognizes that one of the outlaws is a dead ringer for the son of a wealthy rancher who went missing in action while serving in the military and uses the chance for to earn some quick cash so he can woo a pretty saloon girl.

Unemployed miners threaten to burn down the Bisbee bank unless they can withdraw money from their accounts. Unfortunately, the local office doesn't have enough money to meet their demands, so they must pull cash from other locations to survive. Travis is ordered to guard the shipment and must deal with corrupt businessmen and crooks with itchy trigger fingers to get the money through on time.

The careless activities of a former Ranger (Walter Kelly) have Mexico and Arizona on the brink of war.

The Rangers try to capture a ruthless cattle baron and his gang.

An Arizona Ranger is shot in the arm while attempting to thwart a hold-up. He convinces the doctor not to inform Captain Rynning of the seriousness of his injury until he can at least try to regain his shooting form. His fiancée fears that he will be no match for the outlaws who are hijacking gold shipments near his station.