⁣Pat and Stoney are ordered to San Pablo, Mexico, to find out what's behind the trouble an American tungsten mine is having. When they arrive, they discover the mine has been closed, the wells are all poisoned and the town is in the grip of a malaria epidemic. To make matters worse, the lawmen have been followed by four gunslingers determined to give the American troubleshooters all the trouble they can handle - and more.

⁣Pat and Stoney tangle with a gang of robbers who have hijacked an Army payroll.

⁣An outlaw gang is stealing gold from Chinese placer miners, then driving off their claims with outrageous taxes. Because they're Chinese, they can't sue the local government agents. With Stoney posing as a Chinese miner and Pat pretending to be a representative of an Eastern engineering company, the U.S. government tries to bring an end to the careers of the outlaw gang and crooked state government agents.

⁣Pat and Stoney are ordered to Wisconsin to investigate an Indian agent's claim that a lumber company is forcing the Chippewa Indians off their reservation in order to harvest pristine stands of pine trees. The G-men's investigation is hindered by the distrust of the Chippewas as well as the lumbermen.

⁣Pat and Stoney investigate the mysterious closing of a government silver mine and the ghost town left in its wake. They meet several suspicious characters in the empty town, one of whom holds the answers they seek.

⁣A band of gypsies settles down in the Montana Territory to take advantage of the copper stakes they've made in the region. In the nearby town of Bender, a group of shady locals believe the settlers should be stripped of their rights and take the matter to court. When it looks like the judge is going to rule for the gypsies, the outlaws kidnap him and lock him in the local jail.

⁣Pat and Stoney are sent to Oklahoma to assist the state authorities to investigate a hanging judge. Stoney's plan to go undercover backfires when he is framed for murder himself.

⁣Stoney and the son of the local Indian chief are attacked while escorting a gold shipment meant for the tribe. The nuggets are stolen, the Indian killed and Stoney is arrested for the murder and theft. With his partner in jail, Pat endeavors to learn who is behind the robbery and the previous thefts of tools and supplies meant for the Indians before the tribe returns to the warpath to avenge the death of their kinsman.

⁣The Scourge of the Southwest is an especially ruthless and devious killer dubbed the Sidewinder. When a hapless Cavalryman escorting the criminal falls victim to his tricks, Pat and Sonny set out to track him down and bring him in.

⁣Desperado Lew Danning hid his stolen loot before dying. Pat disguises himself as the outlaw and slips into a lawless border town to gather clues from Lasker's gang of thieves. Suddenly Danning's sister shows up looking for her brother.

⁣Pat Gallagher and his sidekick Stoney Crockett are Secret Service agents in the Old West, dispatched by the government to investigate crimes threatening the young nation.

⁣⁣When Lt. "Wild Bill" Traynor, boy of the Marine Corps, arrives at a San Diego Marine Base, he is surprised to discover he has been assigned to duty under his old rival, Captain Benton (Conrad Nagel). While eluding the advances of Rosita (Armida), a Latin dancer, Bill becomes involved with Benton's fiancee, Dorothy Manning (Esther Ralston), whom he quickly wins and Benton accepts the impending marriage.

⁣Two hillbillies kidnap Dusty and Callahan to force them to marry their "beautiful" sisters in a double-barreled shotgun wedding.

⁣Dusty and Callahan rescue a pretty girl, but when strange things start to happen they think she's a witch.

⁣Dr. Baxter tries to help a young man who, when faced with an eviction notice and his mother's mounting medical bills, goes on a criminal rampage. .

⁣Dr. Baxter attempts to help a girl regain her speech, in a circus setting.

⁣Rex Allen as Dr. Baxter poses as an ex-convict to aid the law in tracking down a gang.

⁣A girl announces that her husband and his brother have quaralled and killed each other. But Dr. Baxter is suspicious and starts an investigation.

⁣Dr. Baxter foils a sabotage plot against a railroad project in Arizona. .

⁣Dr. Bill Baxter becomes involved with an attractive woman from the east, who has inherited an oil field near the town of Rising Springs.