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...

On a voyage from Europe to the U.S., Desselway meets and falls in love with Diana Curran. Diana has a dark past, however -- she is married to Wrenshaw, a criminal known as "the Hawk." Diana got involved with Wrenshaw because she thought he was honest, and he keeps her under his thumb by making her believe she killed a man.

Heavyweight boxing champion Jack Dempsey stars in this 15 chapter action serial, of which portions of reels 1, 2, and 4 survive. In the serial he plays the star fullback of his college's football team who gets drawn into an adventure when he stops to rescue a young woman from some thugs on a country road. It includes a gag featuring an exploding football. The rest of the cast includes Lon Chaney, Edgar Kennedy, Bull Montana, Josie Sedgwick and Herschel Mayall.

Boston Blackie Dawson gets some jewels that belonged to the imperial family of Russia. A gang of terrorists is after the jewels.

The ship-owner Herr Reeder Roberts organizes a world trip on his luxury liner "Yoshiwara". Aboard are millionaires and famous artists, but also criminals. The manager of the ship-owner, Stefan Martini, has been murdered shortly before the departure in a mysterious way. Several persons are suspected and these are, precisely, the passengers of the "Yoshiwara".

Zudora, not knowing she's an heiress to a $20 million fortune, lives with her uncle, a mystic and detective, who covets her inheritance. She wants to marry John Storm but her uncle is against it. However, the uncle makes a bargain; if Zudora can solve the next twenty mysteries brought to him, she can marry as she chooses. Episodes 1,2 and 8, plus another unidentified chapter, survive. The rest is believed to be lost.

When a wealthy hypochondriac is dissatisfied by the care of the town doctor (Doc Arnold), he consults with a new physician in town who swindles him out of a large sum of money. When his daughter tries to retrieve the check, the quack (Dr. Bell) turns up dead with a gun shot wound to the chest. Doc Arnold lends his expertise to the investigation and solves the case by finding microscopic evidence on the murder weapon left at the scene.

While working in China for Nathan Goldberg, a New York Jewish importer, Chattfield Bruce comes to admire the Robin Hood philosophy of Wong Lee, who gives to the poor all the food, clothing and money that he steals from the rich. After Chattfield informs Wong Lee of a betrayal among his gang, Wong Lee gives him a ring that is guaranteed to give the wearer the allegiance of any Chinese throughout the world.

A detective falls for a Japanese girl living with her uncle and cousin. When the girl's uncle is murdered, the detective must find out who killed him.

Gentleman crook Boston Blackie answers a want ad for an expert safecracker placed by Doris Macon, who claims a moral right to the safe's contents. She hires Blackie, and they break into the house where the safe is kept. Blackie blows up the safe just as owner Captain von Hoffmeier returns home. Doris disappears with papers from inside the safe, while Blackie takes phonograph records, which, when played with a special needle, reveal secrets that implicate von Hoffmeier as a German political spy.

Pursued by three Indian priests after stealing “The Moonstone” a valuable diamond from the eye of an Indian idol Englishman, Hearncastle is found drowned, presumably by the Indians. Possession of the Moonstone passes to his friend Franklin Blake who presents the diamond to his fiancée. However it is stolen and suspicion falls on another girl who loves Blake particularly after she leaves a mysterious note at her suicide. Subsequently, a doctor discovers that Blake walks in his sleep and took the diamond himself while in that state, but then stolen and never recovered. At last, the thief confesses before his death with Blake and his fiancée reuniting.

A perverted town mayor who murders a young girl and, overcome by guilt, commits suicide. Based on the short story La petite Roque by Guy de Maupassant.

Eddie Haskins, a wisecracking young man, teams up with two ham-acrobats known as 'Bugs & Sunny', and ,when they are all kicked out of a vaudeville theater in California, they enlist in the U. S. Cavalry. Eddie falls in love with Dorothy Clark, the daughter of a sergeant and, following a moonlight tryst, they are discovered by Sergeant Hank Darby who himself is in love with Dorothy. They have a fist-fight in which Eddie comes out second best. When Darby is reprimanded for fighting with an enlisted man, the troopers incorrectly think that Eddie squealed on him, and they punish him with a conspiracy of silence. Dorothy also rejects him. Eddie has a problem. Maybe a fire will break out in the stables and he can rescue Sergeant Darby.

After his defeat at the hands of "Spider" Flynn, the welterweight champion of Europe, boxer Jimmie Dolan and his trainer, Thomas Jefferson Jones, leave for a principality near Paris. Having lost all their money on the fight, Jimmie accepts Count Conrad's offer to impersonate Prince Frederick in return for a large sum of money.

During a violent disagreement, a miner strangles his partner and accidentally shoots the man's wife. He then deserts his own wife and son to elope with the saloon keeper's daughter. As they are fleeing, the girl discovers the deed and insists upon caring for the baby found in the dead wife's arms.

The Government of the fictional country Norland has unleashed a war with the neighboring Galikania and is suffering one defeat after another. A group of conspirators who were dissatisfied with this state of affairs, led by the Social Democrat Frank Frey arrange a coup to overthrew the emperor of Norland. But the working class does not like the new order either. Workers expose Frank Frey's policy of continuing the war and a revolution breaks out in the country. The leader of the socialist revolution becomes a mechanic of the name Franz Stark.

The quiet life style of Ruth Heck and her brother Lem, who belong to a religious sect called the Seekers, is disrupted when a judge imprisons Lem for a crime he did not commit.

Just before a big bout, Jimmie, a New York prize fighter, gets a lucky medal from his friend Billy. Herman Marlex, a chronic teller of tall tales informs Jimmie that the medal is really a royal one, worn by the infant Prince of Magonia when he was kidnapped years before. Then, on fight night, Jimmie is knocked senseless. On his way home, Magonian emissaries see him wearing the medal, and so haul him back to the "homeland." Despite his insisting that he is merely a boxer, Jimmie is hailed as the returning prince.

When anarchist bombs disrupt the engagement ball of Princess Marie Pavlovna, her fiancé, Prince Michail Koloyar, helps her to escape in a carriage. Then Theo Kameneff, secretly in the pay of a foreign government, becomes dictator and, desiring the princess, issues an edict that all women between the ages of seventeen and thirty-two must register and become state property.

A 1919 film directed by Sidney Franklin.