Cowboy is hired by an archaeologist to help find "Hidden Valley", where an Indian gold treasure is supposed to be buried. Just when he finds it, the archaeologist is killed, and the cowboy his charged with his murder.
Tex Mason and Peggy Turner each inherit one half of the Triple X Ranch. Thomas wants the ranch and he has Triple X hand Joe let his men rustle their cattle. Tex not only has to fight the rustlers, he must also contend with Easterner Peggy's idea of what a ranch should be.
While the original title, "Trailing the Killer" isn't a misnomer, it was a bit misleading since the "trailer" is a dog named Caesar (Caesar the Dog) and the killer is a mountain lion. But the makers also pointed out that Caesar "is the most intelligent dog actor since Rin-Tin-Tin" which probably lured a few Rin-Tin-Tin fans with a show-me attitude. Caesar prowls around the woods of the Northwest, dispatches a rattlesnake, visits his she-wolf mate and their pups, pauses to watch the dainty habits of a raccoon personally washing every morsel of food before eating it---and that raccoon had enough food to use up several minutes of running time---and then saves sheepherder Pierre (Francis McDonald)) from getting eaten by one mean mountain lion. Rin-Tin-Tin he ain't, but then who was?
A dying marshal deputizes a drifter to deliver the two killers in his custody to prison. However, the new deputy must elude a pair of bounty hunters who want to deliver the prisoners themselves to collect the reward and would think nothing of killing the deputy to get them.
A Kung-Fu fighter and his brother run away from a very important fight in China and are trailed to the United States by his opponent, where he finds him and a gang of outlaws in a small western town.
Lincoln Tate and Lorenzo Rineschi are the Kennedy/Connelly brothers who are out to avenge their father's death at the hands of the Crow and his men. In their search, they stumble upon a gold shipment that the bandits are after.
A frontier newspaper editor Kirby battles outlaw Tiger Morris who is causing indian uprisings to drive away settlers so that he will can claim a gold deposit as his own. With the help of General Custer, right wins out. Presented in serial form in 12 episodes.
Kincade and Blake cause a mail plane carrying a payroll to make a forced landing in the desert. When they try to get the money, prospectors Ted and Si drive them away. With the pilot shot, Ted takes over as pilot figuring another attempt will be made and this time the Sheriff will be there.
A mysterious master criminal known as The Voice plots with his gang to sabotage the Milesburg Oil Company, but the rightful heir has a secret army of her own to protect her rights.
As foreman of a dude ranch, Gene has two problems. One is a guest, the spoiled daughter of a millioniare, and the other is the disgruntled ex-foreman that Gene replaced, now just a ranch hand. Gene eventually gets the daughter straightened out but has to fire the ex-foreman and this leads to trouble when he returns intent on revenge.
Ben Hall offers $1000 for the wild Devil Horse which Jim Wright and Skeeter capture. While Jim is away, Gil Davis kills Skeeter and takes the horse. The Sheriff then arrests Jim for Skeeter's murder. But unknown to them, an outlaw witnessed the killing
Barton's family is massacred by outlaws. Vowing revenge, he sets out to hunt down the killers. Along the way he meets a mysterious, flute-playing gunslinger who claims to know the identity of the killers and agrees to help bring them to justice. But he has a secret of his own.
A gang of landgrabbers, led by Mexican bandit Manuel, terrorizes the small town of Landford City. The sheriff asks the army for help, which orders Captain Mike Jackson to see what is going on in his old home town and also search for a government agent who has disappeared in that area. Jackson immediately finds himself in the middle of fistfights and shoot-outs with the bandits, who not only have a tight grip on the local farmers but also force Mary, the woman Jackson once intended to marry, to work as a saloon girl.
Roy visits his home town while on a personal appearance tour. While there he enters a pony express race. To keep him from winning, bad guys try to sabatoge Roy's entry. They fail, or course. Songs include the title song and "Smile for me, Senorita."
In a small western town the ineffable judge Roy Bean metes out justice in his own special way. A cargo of gold is ambushed by the outlaw Black Bird who fails in the attempt and then rides into town.
Barnet, a bandit, and the eight men of his band lie waiting in a Texan village. Having confined the people of the village to their homes, they rob the stagecoach which arrives in town carrying a cargo of US $ 100,000 in gold. After the robbery, the bandits take refuge in a deserted mine but a post officer, Dove Williams, is on their track.
After gaining his freedom with the help of an old friend of his father, Spirito Santo/Holy Ghost recovers in an abandoned mine the gold fruit of a previous robbery and makes preparations for a new job recruiting a strange sacristan armed with a machine-gun. Meanwhile a Native American sheriff is on his trail.