The Moonstone

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

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...

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.

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.

This whodunit bears no relation to the 1918 picture of the same name, but both films coincidentally had the same director, Tom Terriss. When sleazy theatrical agent Maurice Beiner (Arthur Donaldson) is found stabbed to death in his office, just about everybody is a suspect - there's aspiring actress Clancy Deane (Eileen Huban), who was one of the last people to see him alive, and Sophie Carey (Alma Rubens) who knows he has some love letters she wrote to Judge Walbrough (George MacQuarrie) before she married her alcoholic husband, Don (Henry Sedley). Or is it Marc Weber (Norman Kerry), who had a falling out with Beiner, or Weber's devoted wife, Fay (Ethel Duray)?

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.

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.

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.

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.

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.