Finishing a trail drive, Hoppy and the boys head to town and immediately get caught up in the conflict between school teacher Miss Abott and next door saloon owner Mawson. When Miss Abott disappears, Hoppy gets a clue to her location and rescues her from Mawson's cabin. It looks like Mawson is the man he wants, but Hoppy finds an item that indicates otherwise.

When Ranger Hoppy's falsely accused young ranger friend is killed while supposedly trying to escape from jail, Hoppy is blamed and drummed out of the Texas Rangers.

The police arrest a man climbing over the wall of a cemetery after midnight. He claims that he is being blackmailed and is following instructions he received by mail to leave $1000 on a certain grave. It turns out that he's not the only one who got a blackmail letter from the same person--calling himself "The Black Panther"--and it also turns out that all the recipients are connected to an opera company.

A Treasury agent gains the trust of a mob gunman while working under cover to smash a crime syndicate.

After being nabbed while trying to stow away on board an ocean liner en route to Hawaii, young Bobby Breen sings for his travel fare and, along with sidekick Pua, turns detective to recover stolen naval documents from crooks

A temperamental film star's vacation turns deadly when he uncovers a murder.

A notorious counterfeiter passes himself off as a Secret Service agent to Steve and gets him to unwittingly help him bilk the racetrack out of tens of thousands.

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.

A private detective and his assistant are hired to find a missing husband by the detective's former girlfriend who dumped him. The case is quickly complicated by a sexy brunette, a missing bank executive, a castle in the desert, and a dead body with its "head blown off" but identified as the husband.

A family setting out for a new life across the sea is shipwrecked on a deserted island. The family members collaborate to create a home for themselves in the jungle environment.

Don Gregor, the son of famous plastic surgeon Dr. Boris Gregor, begins to hang around with young criminal Vic Brady and carry a gun. The pair attempt an armed holdup, and when things start to go wrong Gregor accidentally kills a night watchman. Fearing that Gregor plans to turn himself in, Brady kills him and blackmails Dr. Gregor into giving him a new face.

A playwright, Wakefield, Jr., turns detective when his father is killed after nearly capturing two brothers in possession of four rubies belonging to the British Museum. An investigation suggests that "the Breen girl" is responsible for Wakefield's death, and the younger Wakefield pursues her across the ocean to the United States.

In order to save his family from financial ruin, an English aristocrat agrees to come to America and marry the daughter of a wealthy businessman. Once there he can't bring himself to do it.....

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.

The cruel captain of a schooner dominates the shipwreck victims he picks up.