Daniel Robin has become mixed up with a band of criminals known as "the 13," and is shot when he refuses to do their bidding. His daughter Ruth, brought home from boarding school, reaches his bedside before he expires. He tells her that she will be given thirteen keys. Instructions will be provided with each key and, if she follows the instructions, she will eventually fully learn of her birthright. Many adventures then follow as Ruth attempts to solve the puzzle of each key and establish her true birthright.
The 15 chapter story involves the heroine being protected by a shadow with burning eyes. There's also a cloak of invisibility, some hypnotism and a giant octopus added to the mix.
The mysterious Don Del Oro ("Lord of Gold"), an idol of the Yaqui Indians, plans to take over the gold and become Emperor. Francisco was put in charge of a legion to combat the Yaqui tribe and protect the land, but when attacked Zorro came to his rescue. Francisco's partner recognized Zorro as the hidalgo Don Diego Vega, then ask him to take over the fighting legion as his alter-ego Zorro.
Captain "Wolf" Larsen, the absolute master of a seal schooner, is a mystic and philosopher, though he rules his men with an iron hand. On a ferry going from San Francisco to Oakland, Van Weyden, a critic, and Maud Brewster, a novelist, meet in masquerade costumes and are forced overboard when their boat collides with a steamer. Humphrey, then Maud, are picked up by Larsen's crew. Because of her costume, Maud is taken for a boy and placed in the custody of Mugridge, the cook, who attempts to attack her upon discovering her identity. Larsen takes her under his protection and decides to marry her; but as the ceremony begins, the crew mutinies, and Larsen is stricken with blindness as he faces the rebels. The ship is set afire, and though Humphrey and Maud are rescued by another steamer, Larsen, deserted by his crew, refuses to quit his ship and is enveloped in flames.
Five-episode adaptation of the eponymous Russian novel, directed by Pyotr Chardynin et al.
Richard Grant, imprisoned in India for a crime he did not commit, escapes and makes his way to Africa.
A serial in 12 chapters. Tarzan goes to Guatemala to find his lost friend, D'Arnot. On the way he helps Major Matling search Mayan ruins for hidden jewels and an idol containing the formula for a powerful explosive. D'Arnot and the idol are rescued, but the idol falls into the clutches of the explorer Raglan.
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.
A young heiress of an American gun factory is threatened by a masked man after her father was murdered. This criminal might be a member of her family or a German agent, who wants to get information about the factory's products, perhaps his mystery has a combined solution - we will probably never know...
Professor Campbell's expedition into the hills of Libya obtains a papyrus which might reveal the hiding place of the Golden Tablets of Hippocrates, containing lost medical secrets. Also in the region is intrepid Nyoka Gordon, still seeking her father, lost on a previous expedition. She alone can translate the papyrus, which directs our heroes through deadly perils (including the Tunnel of Bubbling Death) into the land of the Tuaregs. Opposing them are Vultura, Queen of the Desert, and her Arab ally Cassib, both greedy for the treasure...
Cal Stanley goes undercover as a beef buyer in order to catch the gang responsible for stealing the area's cattle.
A silent movie serial directed by George B. Seitz.
This twenty-three episode serial told the story of a secret society called The Black Hundred and its attempts to gain control of a lost million dollars.
Movie serial directed by George B. Seitz.
A beautiful young woman is a daring master thief. She meets the young millionaire Thomas Babbington Norton, while fleeing from the scene of her latest theft.
A train that is carrying the formula for a valuable form of granulated gasoline disappears before it reaches its destination. Railroad investigators and the authorities try to determine where it is and who took it.
Lucille Love: The Girl of Mystery
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.
Japanese spies attempt to subvert America's war effort; G-Men attempt to thwart their plot.
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.