Filmed in the Sierra Nevada mountains near Sonora, California, this Universal serial is Universal's 40th sound-era serial. Eagle Scout Bruce Scott, leader of Martinsville Troop Number One, and his pack sets off in search of lost treasure and finds adventure.

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.

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.

Ken Williams is determined to discover the identity of the mysterious Rattler, who preys upon railroads and transportation companies like that owned by Jane Corwin. The Rattler is especially difficult to catch because of his skill at disguising himself as other people.