Hopalong Cassidy

An evil ranch foreman tries to provoke a range war by playing two cattlemen against each other while helping a gang to rustle the cattle. Each cattleman blames the other for missing cattle. With the help of Bill Cassidy (Hop-along, because of an earlier bullet wound) and Johnny Nelson, the warring cattlemen join forces to do in the outlaws.

The grandson of the notorious bandit El Toro witnesses the murder of his parents by men trying to hijack the gold they were carrying. After El Toro saves the life of Hop-a-long Cassidy, Cassidy agrees to find and protect the boy, who is in hiding from the killers, whom he can identify. Cassidy and his partner Johnny Nelson, with the help of friendly bartender Spike, try to save the boy and bring down the man behind the gold robbery.

Rancher Arnold sends for Hoppy and Red to help fight the cattle rustler Nevada and his gang. Hoppy poses as a gambler to get on Nevada's ranch and meet the snuff-taking boss who pictures himself another Napoleon. Hoppy's smoke signal alerts Arnold's men, leading to a massive gunfight.

Hoppy returns to find Johnny in trouble. Buck Peters has been shot by Porter who made it look like Johnny did it. When Johnny flees he runs into Linda. He takes a liking to her only to learn her father Shanghai is one of Porter's gang. Going after Shanghai, he gets captured by the gang and Porter now plans to kill him. But Hoppy is near by and Johnny will get unexpected help from Shanghai.

Kane is the head of a gang rustling cattle and robbing stages. When Johnny breaks up one of the robberies, Kane sends his stooge Sheriff to arrest him for the robbery. After Hoppy rescues Johnny, Kane gets a wealthy rancher to offer a reward for Hoppy and Johnny dead or alive. Then he tells his men to bring them in dead.

The sixth of the Hopalong Cassidy films, with the story source credited to Clarence E. Mulford's "Mesquite Jenkins, Tumbleweed", finds Hopalong Cassidy and his young pal, Johnny Nelson, leaving their Bar 20 home range to answer a letter offering them jobs on the Tumbling-L Ranch of Big John Trumbull near Yucca. Before they arrive in town, they save an old wrangler named Windy from drowning, who has been fired on from ambush as he was delivering a valuable stud bull to the depot. Windy, whose sole trusted weapon is a blacksnake whip, tells them he works for the Three-J Ranch adjoining Trumbull's spread. Hoppy and Johnny soon learn that Trumbull's outfit isn't the kind they want to work for, turn down the job offer, and take work with the Three-J, operated by easterner Jim Jordan and his sister Sally. Jordan is planning on fencing in his grazing land, but Trunbull swears this won't happen because, unknown to the other ranchers, Trumbull's men have been driving rustled cattle through a pass on the Jordan land. Hoppy and Johnny aid Jordan in getting his fence up, while Trumbull's men first try to stop them by gun warfare and then by starting a stampede of rustled cattle toward the narrow pass where the fence is being erected. Hoppy dynamites a dam, releases a torrent of water, and then succeeds in turning back the herd on the rustlers. The troubles at the Three-J are over and Hoppy and Johnny head back to the Bar 20.

When a miner is murdered before he can file his claim, Editor Saunders sends for Hoppy. Now the new Marshal, Hoppy learns Lilli Marsh owns the murdered miner's claim and her henchman Blackie was the killer. After Hoppy and the ranchers take care of Blackie's gang, Hoppy goes alone to face Blackie and Lilli.

When Hoppy agrees to lead a large cattle drive north he runs into lots of trouble. First Anderson and Wilson join the drive to do what damage they can. Then Lewis and his men posing as Tail officials try to cut out part of the herd. When Hoppy sees through this ruse, they rustle some cattle and burn the camp.

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.

In the 10th film of the 66 Hopalong Cassidy movies, Russell Hayden makes his first (of 27 consecutive) appearances as Cassidy's sidekick/protégé "Lucky" Jenkins. The character's actual name in the many Clarence E. Mulford books that featured him was "Mesquite" Jenkins, and Hayden's role was billed in this film as Mesquite "Lucky" Jenkins, and this film was the first and last mention of Mesquite Jenkins. This initial pairing of the trio of William Boyd, Russell Hayden and George Hayes (who only became known as "Gabby" when he wasn't allowed by Paramount to carry his "Windy" moniker to Republic when he departed the Cassidy series, which makes any pre-1939 cast listing showing a credit listing for a George "Gabby" Hayes a misnomer and in error for those who don't care for revisionist film history) is the one that many western-film and/or Cassidy devotees consider the best of all the trio pairings in the series. This one finds the ranchers near a Wyoming Indian reservation suffering heavy losses because of cattle rustlers that leave signs that the Indians are the culprits. Hopalong Cassidy and his pals, Mesquite "Lucky" Jenkins and "Windy" Halliday buy the Bar Three ranch in the territory, and Cassidy suspects Andrews, the deputy government agent in charge of the reservation, of being the head of the rustlers. When Lone Eagle, a half-breed secretly working with the gang, is found murdered, Andrews incites the Indians to make war on the white men. Cassidy, as the leader of the ranchers, gains the confidence of the Indian chief by pointing out that Lone Eagle was "half-bad because he was half-white", and with the help of an Indian scout proves that Andrews killed Lone Eagle. The Indians then join forces with the ranchers in a Cassidy-led mounted charge against the rustler's stronghold, with the effective agitato score written by Lee Zahler for the earlier "Borderland" as the stirring background music.

Hoppy arives posing as an outlaw to avenge his brother's killing by Plunkett. After robbing a train and killing Plunkett, he gets to meet the boss known as the Lone Wolf and lead his next job. Seeking help from Stoneman to capture the outlaws, he realizes too late that Stoneman is the Lone Wolf and is captured.

Lucky is falsely accused of robbing the local bank and assumed drowned in the river while being pursued by a posse. A grieving Hoppy takes exception to remarks made about his presumably dead young friend by local lawyer Cal Howard, and Hoppy knocks him down in public. Howard is engaged to Agnes, the pretty and personable daughter of local cattle rancher Glen Randall, who has borrowed heavily from the town bank in order to buy a herd of breed cattle. Howard's callously materialistic attitude toward his fiance, coupled with his virulent jealousy of Agnes' friendship with Hoppy, causes her to break off the engagement. The vindictive Howard pressures the bank to call in its loan on the Randall ranch and conspires to rustle the valuable herd, so that the Randall spread will fall into his hands. This is part of a larger covert plan by the avaricious lawyer to take over the entire valley on the behalf of a shadowy combine. A desperate Randall recruits Hoppy as his foreman to help him deal with the crisis and he immediately clashes with Howard. When Lucky turns up alive, he joins Hoppy and Windy in foiling the lawter's greedy plans.

On a cattle drive Hoppy, camp cook Windy, companion Lucky, and young Artie Peters encounter an eccentric professor. The professor professes to be searching for the evolutionary missing link, but in reality he is a cattle rustler who uses his dynamite to scatter the cattle in order capture some of them. Hoppy and Bar 20 guys ultimately capture the professor.

During the Spanish-American War, Colonel Teddy Roosevelt's Rough Riders are short of horses, and Hopalong Cassidy and his Bar-20 friends are detailed to round up a bunch of wild horses, but a renegade and his gang are out to stop the roundup.

Lorna Drake arrives from England to take over the ranch. Although she and Hoppy argue most of the time, she takes a liking to him, which angers her fiance Ronald. This enables Scar to enlist Ronald's help in his plan to kill Hoppy. But when Hoppy foils that plan, a forest fire develops, endangering Lorna.

Having her cattle rustled by Allison and his gang, Nora sends for Hoppy. Allison has him and his pals Lucky and Pappy quickly arrested and put on probation without their guns. But when Allison kills Dillon, Hoppy goes into action. He sends Lucky for the Bar 20 hands while he accuses Allison. This incites Allison and he sends his gang who are met by Lucky and the boys resulting in the big shootout.