A mysterious detective called The Masked Marvel battles Japanese saboteurs intent on blowing up America.

Mine owner Jackson Decker orders his manager to obtain Tom Bailey's milling machinery no matter what the cost. When Bailey is found murdered, suspicion naturally falls upon the mine owner and his son, a Canadian Mountie, is ordered to find the real culprit. He joins forces with a French-Canadian constable, Bailey's beautiful daughter and a phony palm reader to learn the truth and discovers a secret gold mine, a double-crossing casino owner and a forger at the bottom of the conspiracy.

At the Bainbridge Research Foundation, Professor Franklin Arnold, displays his creation, the Metalogen Man, a robot, to Professor Ernst and three other colleagues. Shortly afterward, the three associates are killed by Thor (Ray Corrigan, in his for-rent ape suit), a huge ape trained by Ernst, and Arnold, his daughter Babs and Ken Morgan, a representative of the company for whom the robot was made, find it has been stolen. Their 15-chapter search for Thor, the robot and Ernst leads to a series of cliff-hanging adventures as Ernst strives to gain control of the robot and the supply of metalogen needed for its production.

Evil Hassan slips back into his native land of Ahad and plots to overthrow his twin bother, Kasim, who has just been crowned the Caliph. Hassan enlists the aid of the chief Chamberlain, Faud and they send several henchmen into the royal palace, who then knock Kasim unconscious. Faud and Hassan dispatch a couple of different hirelings to take Kasim into another part of the town and murder him.Kasin comes to and gets away, but has been wounded. Omar, a beggar, takes Kasim to his home and nurses him back to health. But, it takes a few weeks for Kasin to get healthy and, by that time, Hassan has a firm grip on the duties of a Caliph. In a storeroom, Kasim finds a coat of mail with a great hawk emblazoned across the chest and promptly decides this is the costume he will wear while fighting to get his old job back. Meanwhile, the Emir of Telif shows up with his daughter, Princess Azala, with the intent of marrying her off to the local Caliph. They do not know that the current-Caliph on the royal-throne is the evil twin-brother of the man they think he is.

A Martian spacecraft crash-lands near the observatory of Cyrus Layton, designer of Earth's first spaceship. The survivor, forerunner of an invasion, can assume the form of any earthman. Calling himself the "purple monster," the humanoid invader sets about gaining control of Layton's rocket project. Opposing him is Craig Foster, former Secret Service man, who episode by episode tries to thwart the monster's attempts to acquire rocket components. Will Craig ever suspect that his closest associate is really the monster?

Homesteaders are moving into the valley settled many years ago by rancher Craig Dolan. He wants to keep them out by legal means but his nephew Bart brings in outlaws to drive them out. The Lone Ranger is on hand to help the homesteaders battle Bart's men as he overcomes traps, ambushes, burning buildings and other obstacles in his attempt to bring peace to the valley.

Wagon trains are not making it to Oregon and Jeff Scott has been sent to investigate. Morgan, the representitive of an eastern syndicate, controls the fur trade and does not want the area settled. So he sends his men lead by Bull Bragg to stop the latest wagon train. Scott is quickly on to Bragg and repeatedly captures him only to have him escape before he can reveal whom is responsible for the attacks.

The Shadow battles a villain known as The Black Tiger, who has the power to make himself invisible and is trying to take over the world with his death ray.

A short plot summary finds Wild Bill Hickok (Bill Elliott), the U.S. Marshal in Abilene, Kansas, opposing the Phantom Raiders, a gang of renegades raiding the cattle drives over the Chisholm Trail from Texas to Abilene. Hickok organizes the boys of the town into the "Flaming Arrows" to assist him. Finally, in the 15th chapter, "Trail's End", Hickok, the "Flaming Arrows" and army scout Kit Lawson (Kermit Maynard) combine to put an end to the Phantom Raiders.

A 12-episode serial in which Tim Tyler goes to Africa in search of his father in gorilla country. He meets up with Lora, who is after Spider Webb who has framed her brother. Webb causes the death of Tim's father, but is eventually tracked down.

A 15-episode serial in which Buck Grant, the Phantom Rider, helps rancher, Mary Grayson, fight off a band of outlaws out to seize her property.  

A 15-episode serial in which our hero, Jim Dorn helps hide Jean McNain from a man she can implicate in a murder.

A 12-episode serial in which scholastic sports star Frank Merriwell leaves school to search for his missing father. His adventures involve a mysterious inscription on a ring, buried treasure, kidnaping and Indian raids. He saves his father and returns to school just in time to win a decisive baseball game with his remarkable pitching and hitting.

The US marine corps must battle a would-be world conqueror who uses electricity as a weapon.

A variety of people are searching for a long-hidden treasure somewhere on an island.

Pat Gallagher and his sidekick Stoney Crockett are Secret Service agents in the Old West, dispatched by the government to investigate crimes threatening the young nation.

The Double R Ranch featured "The King of the Cowboys" Roy, his "Smartest Horse in the Movies" Trigger, "Queen of the West" Dale, her horse Buttermilk, their dog Bullet, and even Pat's jeep, Nellybelle.

Ozzie and Harriet Nelson raise their two sons Ricky and David. As the sons age, they experience teenage dating problems, marriage and careers.

Dusty Bates observes some smuggled jewels hidden in a crate aboard a ship; he is pursued by low-lifes when the crate is put ashore.

Government agents try to thwart smugglers, while some sort of plot unfolds, about a hidden treasure revealed by cursed coins.

Bob Norton, seeking his brother's killer, tangles with outlaws, wild horses, and a "wild" boy.

Professor Sturgess invents a miraculous engine which can draw unlimited power from the atoms of the air. When the professor is killed, his daughter and her fiance must fight to keep the secret of the power engine out of the hands of evil Weston Dore and his henchmen.

Jack Logan is the heir to half of a map to a hidden Indian mine. The trader and villain Jean Gregg sends his chief henchman Mack to make life difficult for Jack. Jack is aided in his quest by the heirs to the other half of the map: Helen Holt and her younger brother Billy, and by a uniformed mystery man known as "The Mystery Trooper".

A young man's father is murdered and the man convicted of the crime escapes prison, leaving a note intimating that seven local men know the real killer's true identity. The murdered man's son sets out to locate the seven men and find his father's slayer.