Cowboy Larry O'Day and his sidekick Lucky Smith happen upon a distraught Barbara Hartwell, who is about to be arrested for the murder of her uncle. With Barbara behind bars, Larry is determined to find the real killer and soon finds himself in the middle of a mystery involving crazed German entomologists and a smuggling ring bringing Chinese "picture girls" across the Mexican border for sale to wealthy Chinese bachelors.

As the sheriff of a small western town, Autry sings his way into a relationship with Eleanor, a singer from a Chicago nightclub who earlier witnessed a murder.

A meddlesome reporter sporting a young bride takes on a gang of modern day cattle rustlers. Donald "Red" Barry plays Dan Reilly, a newspaper reporter just returned to LA with his wife, photographer Margie (Marjorie Steele). Margie insists on taking pictures of everywhere they go, and so as she's walking into a butcher shop she poses for Dan - while at the same time three thugs make their way quickly out after beating up the proprietors. Soon Margie and Dan are involved in investigating an illegal meat operation that rustles cattle and forces butchers to buy it - or else. Dan gets beaten up a couple of times, but is undaunted in pursuing the great story - and hey, he's only got 64 minutes to do so, he'd best get cracking!

Roy Rogers takes on crooked wartime profiteers in the musical western Ridin' Down the Canyon. Posing as solid citizens, the crooks spend their evening hours stealing horses from local ranchers, then selling the steeds to the government at exorbitant prices. The head of the bad guys runs a dude ranch where Rogers and his pals (The Sons of the Pioneers) are employed.

A seemingly charitable soup kitchen operator (who moonlights as a criminology professor) uses his Bowery mission as a front for his criminal gang. Police attempt to close in on the gang as they commit a series of robberies, murders and bizarre experiments on corpses.

Bad guys plot to trick a newly arrived Eastern girl out of a ranch which belongs to her infant ward. Roy, of course, saves the ranch for the girl. Songs include "I'm Headin's for the Home Corral," "He's a No Good Son of a Gun," "Sandman Lullaby," "Song of the San Joaquin," and "I'm a Cowboy Rockefeller."

The city's District Attorney is murdered, and a newspaper reporter investigates. He starts finding out that everything wasn't quite as cut and dried as it appeared to be.

In the midst of some friendly horseplay on their "Flying R" ranch, the Range Busters, Crash Corrigan, Dusty King and Alibi Terhune, are sobered by the arrival of a buckboard bearing their old friend Larry Meadows and his niece Dorrie Willard. Meadows seeks their aid against a gang of outlaws terrorizing his town. Ernie Willard, Dorrie's brother, has been taken in by Tex Laughlin who is using the Willard ranch as an undercover for his real occupation as a member of a gang of outlaws led by Tim Douglas, a supposed friend of the Willards.

Billy the Kid has been wrongfully arrested for robbing a train. In order to prove his innocence, the Kid breaks out of jail and hits the trail to search for the real robbers. Along the way, he discovers that an outlaw band has been impersonating upstanding ranchers.

Roy is a newspaper reporter. He goes to Cheyenne to cover the activities of supposed bad guy Arapahoe Brown. Roy, of course, discovers who the real bad guy is.

A woman hoping to raise cash to pay for an operation to restore her blind brother's eyesight finds herself implicated in a nightclub murder.

A corrupt official at San Quentin tries to frame an innocent guard for several murders within the prison.

A crooked lawyer and his gang are trying to steal some government land meant for a stagecoach company. The company hires a cowboy to stop them.

Wanted by the law in New York, Dr. Steve Kells heads west and arrives in an area controlled by an outlaw gang known as the Border Legion. When the gang's boss is wounded, they kidnap Kells and force him to remove the bullet. Not allowed to leave and being a wanted man, he joins the gang. Now wanted as a gang member also, he nevertheless plans a raid that will lead the entire gang into a trap.

Trouble in Colorado is tying up Union troops needed back east during the Civil War and Lieut. Burke is sent to investigate. Macklin and his gang are causing the problems and Capt. Mason joins them. When Burke catches up with them he also finds Mason, his brother.

This one finds Jack Slade and Mary Conway,alias Blanche, being recognized as known and wanted crooks by deputy marshal Harry Stevens and, when he orders them out of town, Slade kills him. His son, Bob Stevens and friend Parkford become U.S. Marshals and proceed to rid the town of the cut-throat gang that has been terrorizing the citizens. Bob goes undercover as an outlaw and works his way into the gang, while Hoot poses as a Dude who goes about making fiery speeches on behalf of law and order.

A lawman stages a prison break so a gang of imprisoned robbers will lead him to their hidden loot.

A man accused of planning a prison break turns the tables on escaped cons by leading the group into the desert.

While Sam Houston in in the nation's capital trying to get Texas into the Union, his aide is trying to impose a self-serving tax on the use of the Santa Fe trail. The lady owner of a wagon train is using the trail, and a Texas Ranger comes to her assistance.

The Carson City Kid and partner Laramie are outlaws. When his partner is caught the Kid, his identity being unknown, takes a job in Jessup's saloon. Here he see Jessup cheat Waren out of his money. Warren then robs Jessup posing as the Kid but gets caught. To gain his freedom, Laramie identifies Warren as the Kid. Realizing Jessup is the man that killed his brother, the Kid must find a way to clear Warren and get Jessup.

A story of cattle rustling and double identities.

A wounded archaeologist crawls into the camp of three kindhearted cowboys. When the cowboys bring him to a nearby trading post, he's murdered after he lets slip a secret about a hidden cave. Investigating his death, Ken and his friends encounter a land dispute between a pair of neighboring ranches, an arrogant German baron and a mysterious shack that houses a great secret.

After Pat Garrett kills Billy the Kid, Billy's look-alike Roy Rogers arrives and is mistaken for him. Although a murderer, Billy was on the side of the homesteaders against the large ranchers. As Billy's death is unknown, Roy gets Garrett to let him pose as Billy to continue the fight, but without the killing.

Detective Tracy rescues Tess Trueheart and Junior from a killer called Splitface.

Saunders with his Cattlemen's Protective Agency is running roughshod over the ranchers. Lawyer Larry Kimball is fighting him but he needs a rancher that will stand up with him against Saunders. He finds him when Lou Gehrig retires from baseball to take up ranching. Lou expects to relax on his ranch but quickly joins Larry in the fight.

Drummond's girlfriend is kidnapped by his enemies and he along with his friend Nielsen, an inspector from Scotland Yard, follow the trail and try to rescue her from the kidnappers.

A Capone-like racketeer named Anderson, who after being chased out of one town by the authorities immediately sets up shop in another. Unable to get any tangible evidence against Anderson, DA Wayne orders his assistant Carter to dig up some dirt on the gangster boss. To do this, Carter pretends to turned crooked, joining Anderson's gang in order to accumulate evidence. Alas, Carter's girl friend Patricia knows nothing of her boyfriend's subterfuge, and she suspects the worst.

In his starring debut, Roy gets elected to Congress in order to bring water to the ranchers in his district. In Washington, he learns he needs the backing of a key congressman and gets that man to go west for an inspection trip. When the congressman is initially unimpressed, Roy gets the inspection party stranded without water to show the true conditions.

Gen. Ulysses S. Grant has a job for Wild Bill Hickok (George Houston) and his sidekick (Al St. John).

Gene and Frog arrive with a herd of horses for Gene'e brother, a diamond prospector whose work has attracted the interest of a bunch of badguys.