Cliff Parkinson

Disguising himself as a milquetoast Easterner who writes Western novels, Hoppy enrolls in a dude ranch in order to unmask the murderer of the owner's husband.

A gambler is thrown out of a western town, but returns when the town is suddenly threatened by a band of marauding Apaches.

This film was produced and released in 1944 by Film Enterprises for the 16mm school-and-institutional market, and was picked up and released in 1948 by Astor for theatrical 35mm showings. Both versions finds the citizens of Rockford upset over a series of murders and robberies. The Sundowners - Andy Clyde, Jay Kirby and Russ Wade - ride into Rockford and innocently takes jobs with Tug Wilson and his tough crew of line riders, who are in cahoots with Yeager in a big land swindle scheme.

Posing as a cattle buyer, Hoppy crosses over into Oklahoma where the Jordan brother's and their outlaw gang operate outside the law. After receiving an unfriendly reception when he finds them, he, California, and Johnny rustle their cattle and drive across the river into Texas. He hopes they will cross over to retrieve their cattle and then he can arrest them.

When Ranger Hoppy's falsely accused young ranger friend is killed while supposedly trying to escape from jail, Hoppy is blamed and drummed out of the Texas Rangers.

Before he was killed by Mark Foster's men, Bud Lawton willed part ownership in his ranch to Hoppy and his two pals. When the three arrive they find a fake posing as Lawton. When they expose the imposter, Foster gets the Sheriff to jail them for Lawton's murder.

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.

As rustled cattle have mysteriously disappeared, Johnny sends for his friend Hoppy, Hoppy arrives and immediately suspects Dan Slack. Realizing his telegram about Slack was intercepted, he locks up the operator Lafe knowing he can escape. Tailing Lafe he finds a secret entrance to a mine and inside finds the missing cattle. But Slack's men also find him just as the cattle are stampeded through the mine shaft.

Hoppy's brother has been murdered and he is on the trail of the murderers. To get them he makes himself seem to be a wanted man.

Hoppy is busy chasing stagecoach bandits who sing as they rob.

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.

The U.S. Army needs more horses for the Spanish-American War. Hoppy must turn his Bar 20 cowhands into Rough Riders to gather up the horses, and of course bad guys try to sabotage the operation.

When three Texas Rangers try to investigate kidnapped Mexicans being used as forced labor in the mines of Silver Bullet, they are framed for murder by the town's corrupt sheriff.

Hoppy and Lucky have been called in to investigate a series of stage holdups. The robbers are taking gold from Colby's mine and Hoppy suspects it may be ex-outlaw Colby himself. When Speedy strikes gold, Hoppy borrows it and announces a gold shipment hoping to catch the gang and their leader.

U.S. Marshal Hopalong Cassidy is called when a town becomes overun with bad guys. Disguised as a member of a medicine show, Hoppy discovers that the ringleader is none other than sweet li'l ol' Ma Burton.

A geologist has found oil on the neighboring ranches and teams up with Ace who has his gang create a reign of terror to get the ranchers to sell out. But to get rid of Red Ryder, Ace sends for the San Antonio Kid. Arriving, the Kid has a freak accident and Red comes along to save his life. When the Kid later meets with Ace he learns that Red is the man he has been paid to kill. Written by Maurice Van Auken

Roy Rogers, Smiley Burnette and the Sons of the Pioneers go undercover to help Texas Governor Russell Hicks stop World War II Axis sympathizers from blowing up U.S. warehouses.

Hoppy and new sidekick California Carlson head to California to help out Lucky Jenkins.

Rancher Clay Travers finds and brings in the body of ranger Frank Mattison, murdered on the road to Trail City, where he had been sent to deal with an outbreak of cattle rustling. Businessman Art Kenyon, who has hired gunman Ed Martin to impersonate Mattison to further his rustling schemes, quickly changes Martin's story and has Travers framed for the ranger's murder. Managing to escape, Travers must come up with proof to clear his name and bring the true killers to justice.

Roy returns home to fine a range feud between the cattlemen and the sheepmen. When his friend is killed he finds the rifle had a defective pin. He learns the rifle belongs to a ranch hand named Barker and that a third party has caused the feud. When he captures outlaws trying to blow up a dam, he claims Barker was the killer. But Barker has switched rifles and the outlaws now accuse Roy and Roy finds himself in trouble.

Bill Ralston arrives in town planning to settle down but quickly gets caught up in the fight between the townspeople and Poe Daggett and his gang. He takes the job of town Marshal and soon brings law and order. When Daggetts men ambush him he kills Poe's brother. Poe then kills Bill's friend Brant and this leads to the showdown.

The election to determine if Texas will become a state is near and men opposed are running contraband across the border. Sunset and Frog are Border Patrolmen and have an agent that tips them off by carrier pigeon. The Army arrives and the commander is Sunset's brother. When the agent is found out and murdered, his fake replacement then leads the soldiers astray.

Hoppy, Lucky and California search for a mine owned by Trudy Pendleton after it was taken from her by thw swindling gambler Ace Gibson. They find the mine and Hoppy fights Gibson over it.

Hoppy goes undercover as an outlaw (which permits him, for once, to drink and be mean to children) to track down a bunch of outlaws operating along the border. Loco, the head bad guy, deflects suspicion from himself by pretending to be a moron.