Using marked bills, Steve is looking for the supposedly dead Henry Hardison. Coming to Bonanza Town he gets a job with the town boss Crag Bozeman and gets paid with marked bills. He suspects Hardison is Boseman's boss and he is right as Hardison and his men are now planning to get rid of both him and the Durango kid.

An outlaw gang is trying to stop the reopening of a mine as they look for the money left there by the famous outlaw Dusty Morton. After a ten year absence, Morton has apparently reappeared and Steve arrives looking for him. He finds his son who also wonders if his father is still alive. With the gang soon after him, the Durango Kid goes into action and Steve tries to learn who the real Dusty Morgan is.

The coming of the railroad to Cedar City spells the end of the stagecoach as the government gives the mail contract to the fastest means of delivery. McCord loses the stagecoach line gambling with the new buyer, but has enough hidden money to buy a ranch and some cattle. To make more money, he starts a gang to rob the railroad, express offices and steal cattle. But the railroads send out special agent Cameron to end his reign of violence.

Edited version of the 1940 Universal serial "Flash Gordon Conquers the Universe", released in a syndication package to TV in 1966.

An imprisoned gunfighter must scatter to elude the authorities. Outlaws Bob Ford and Vic Rodell are nabbed, but the governor offers them amnesty in exchange for their help in bringing Jesse and his brother Frank to justice.

An internationally-notorious criminal scientist returns to the US to sell his latest invention, a disintegrating gas, to a foreign power. When he arrives, however, he is spotted by a young Coast Guard man, whom he kills - and thus earns the enmity of the entire US Coast Guard, but especially the murdered Guardsman's older brother who, together with his reporter-girlfriend and her comical photographer, vigorously sets to tracking him down and interfering with his plans to develop the city-melting gas in quantity. A Republic Serial in 12 Chapters.

The ramshackle Smoky River Ranch is all that stands in the way of a developer and a big real-estate deal, but the old man who owns the ranch won't sell it, because he has to take care of some down-and-out theater people to honor his dead son's memory. Frustrated, the developer sends in a pretty young girl to try to trick the old man into selling the ranch.

When sponsor Nottingham cancels King Russell's radio program, The Hot Shots try to change his mind. They not only fail but Nottingham's son forces them to take him back to Russell's ranch. Once there he starts playing practical jokes. With everyone disliking him and learning his father is coming, he has a plan to redeem himself.

A mad doctor named Zanoff uses a drug to bring himself back from the dead after his execution in prison. Dick Tracy sets out to capture Zanoff before he can put his criminal gang back together again.

A mysterious plague, the Purple Death, ravages the earth. Dr. Zarkov, investigating in his spaceship, finds a ship from planet Mongo seeding the atmosphere with dust. Sure enough, Ming the Merciless is up to his old tricks. So it's back to Mongo for Flash, Dale, and Zarkov.