The Great Secret

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 reporter and a detective team up to solve the murder of a nightclub singer who had been involved in a divorce scandal.

In the mythical kingdom of Lyria, two young Americans get mixed up in a plot to get rid of the rightful king, who at times loses his reason.

Hajj, a rascally beggar on the periphery of the court of Baghdad, schemes to marry his daughter to royalty and to win the heart of the queen of the castle himself. This film is believed lost.

Based on the David Belasco stage production of the Max Marcin play in which heavyweight-champion Jack Dempsey played the role of the fighter, Tiger: This "behind-the-scenes look of a heavyweight-championship fight" looks much like all of the other boxing films in which the Champ gets involved in a frame-up and is asked to take a dive.

A boxer saves a girl from a noble kidnapper.

Millionaire Joshua Barker insists that his daughter, Faith, must marry Phil Langhorne, a man that neither likes, and Faith is in love with and eager to marry her childhood sweetheart, John Temple.

Disaster seems imminent when scientists discover that the planet Mongo is about to crash into Earth. Luckily, heroic young Flash Gordon is on hand to lead an investigative mission into outer space and onto the speedily approaching planet. There, he and his best girl, Dale, who is along for the ride, learn that Ming, the devious ruler of Mongo, has purposely put the planet on a collision course with Earth, and only Flash can stop him.

As a boy, Raoul is reared by an Arab tribe in Algerian Sahara. Years later, as a refined Europeanized gentleman, he falls in love with Barbara, an officer's daughter, who rejects him when she discovers his background. Affecting a raid, he captures her and then secretly buys her at a slave auction. When she is rescued by French troops, however, his ancestry is established and they find happiness together.

A movie serial in 12 chapters: The famous comic strip character is on a mission to protect a secret tunnel passage between China and India.

15 chapter serial. Gideon Trask and his henchmen at the saloon in Arkansas City covet the mineral survey of the Louisiana Territory made for Napoleon before the sale of the Territory to the United States. This is in possession of the Heath Brothers, who seek to use it in staking their land when the Oklahoma territory, last of the Louisiana tract to be released by the Government, is opened to Homesteaders.

Adventures of an American Secret Service-girl in search of an important German secret during the war. Chapters: [1] “The Great Secret,”; [2] “Marked for Death,”; [3] “The Gas Chamber,”; [4] “Below the Waterline,”; [5] “The Acid Bath,”; [6] “The Unknown,”; [7] “The Betrayal,”; [8] “A Crippled Hand,”; [9] “Woes of Deceit,”; [10] “The Inn of Dread,”; [11] “The Death Studio,”; [12] “The Chance Trail,"; [13] “Wings of Mystery,”; [14] “The Hidden Way,”; [15] “The Secret Host"

On the American frontier in the last decades of the 19th century, Billie is a female cowboy who fights a series of bad men in this film serial.

King of the Candian riding police is up against Japs and Nazis who are about to invade Canada. They just want to clear the way with a new futuristic plane called "The Falcon" first, but that's not gonna happen if Kig has his way.

The nefarious Dr. Fu Manchu searches for the keys to the tomb of Genghis Khan, in order to fulfill a prophecy that will enable him to conquer the world. His nemesi, Dr. Nayland Smith and his associates fight to keep the evil doctor from getting his hands on the keys. In 1943 the serial was edited together into a feature movie also called Drums of Fu Manchu.

Richard Grant, imprisoned in India for a crime he did not commit, escapes and makes his way to Africa.

Japanese spies attempt to subvert America's war effort; G-Men attempt to thwart their plot.

A tale of gold discovery, betrayal, and romance set during the California Gold Rush. A dying Indian reveals a gold mine's location to settlers Eva and Ben, leading to conflict with Spike, a follower, and an Indian tribe, ultimately ending with Ben and Eva finding the mine, naming it "The Little Bear," and securing their future.

A mad scientist named Dr. Satan plots to steal key pieces of technology to enable him to build an army of robots based on his prototype to conquer America. The only one standing in his way is Bob Wayne, who fights Satan as the enigmatic Copperhead. Mysterious Doctor Satan is a 1940 film serial named after its chief villain. Doctor Satan's main opponent is the masked mystery man, "The Copperhead", whose secret identity is Bob Wayne, a man searching for justice and revenge on Satan for the death of his step-father. The serial charts the conflict between the two as Bob Wayne pursues Doctor Satan, while the latter completes his plans for world domination.

When a cruel sea-captain named Bennett murders the mother of his child, the little girl is rescued and raised by Gale, a storekeeper. Years later, when the girl Necia has grown to womanhood, Bennett shows up in her Alaskan village, determined to have his vengeance on Gale and to retrieve Necia by force.