When Mary and Fannie Graham, daughters of a good mother but a father with criminal instincts, are left motherless, Mary flees from her unhappy surroundings while Fannie, inheriting her father's disposition, remains and is raised as a thief.

Jim Crosby, the product of a broken home, becomes a gangster and goes to prison. Meanwhile, Ann Payton, an heiress, converts a saloon into a mission. She is engaged to her father's secretary, Temple Vaughn, a gambler. Jim is released from prison and seeks shelter at the mission. Temple becomes indebted to gambler Phil Johnson and is forced to arrange a crooked poker game involving some of his wealthy friends. Jim overhears the plot and, realizing that Temple is Ann's fiancé, robs the poker game and puts a check Temple forged into Temple's own pocket.

Louis and August Siever, the twins sons of a German father and American mother, are traveling in Europe when war breaks out. August joins the Kaiser's army, but Louis, a supporter of the United States, is practically made a prisoner in Berlin for a year while he tries to prove his American citizenship. After a violent confrontation with Louis, August steals his brother's passport and leaves for New York with Gerda Anderson, a German spy.

Lois Fox, upon whose shoulder is branded a Chinese idiograph resembling the letters "A. Y.," is rescued from a gang of Chinese ruffians by Brice Ferris. His servant Ming, in attempting to steal from her finger a ring that bears a mysterious green seal, is killed, and soon afterward a stranger named Strang arrives, also in search of the girl. Despite Brice's efforts to protect her, Lois is abducted and taken to the headquarters of Lao Wing, the leader of a secret Chinese society known as the Tong.

A gang of crooks are employed to get possession of valuable papers of international importance, held by the French Ambassador, Vicomte de Jarlais. They are also instructed to get the Ambassador out of the way and make it appear that he has committed suicide. His mysterious disappearance arouses the United States Secret Service officers

Wade Hildreth is sent to New York from London to receive a diamond necklace for Lady Gwendolyn from the jeweler Arabin. A gang of crooks led by Pete Fielding, known as "The Shadow," plans to keep Hildreth from going to Arabin's until they have robbed the store. Actress Morn Light, whom the Shadow loves, agrees to entice Hildreth to her apartment to be imprisoned. When she warns Hildreth because she wants to avenge her father's death, which was caused by the Shadow, the Shadow overhears and captures them both.

Old Silas Blackburn, a wealthy recluse, lives alone with his butler and his ward Katherine. One night, Katherine discovers Silas murdered in the room where three generations of Blackburns have mysteriously died. Silas' grandson Robert, whom Katherine loves, comes to visit the next day, suffering from amnesia.

A woman's cheating husband is murdered at their country estate, and suspicion immediately falls on her.

Humanitarian Roberta induces her father to hire former convict, Bill, as his gardener. When she leaves on vacation, Bill steals her jewelry and eventually sells a brooch to her boyfriend, Richard, who unknowingly gives it to her as a present.

A man breaks into a flat, startling the occupant. They argue about the new girlfriend of the 'burglar', who's come to get her stuff. Then a third man bursts out of the cupboard...

When Harlan Carr inherited his Uncle Ebenezer's "Jack-O Lantern" house and too his bride there to live, he found himself the unwilling host of a score of hungry relatives within a week. Soon, strange things began to happen. A black cat made the house his headquarters, unexplained sounds could be heard and a shadowy figure floated through the halls at night.

Chaney plays two roles: mad scientist Arthur Lamb and Lamb's "experiment", known only as the Ape Man. This hideous creature was the result of Lamb's attempts to transplant animal glands into human beings. A lost film.

Ranch foreman Kerry has boarded with Kitty Tynan and her mother for five years in western Canada, his past is a mystery to everyone. He is actually an English aristocrat who lost all his money gambling and left the country in search of work. Kerry and his friend Horan own an option on property which crooked lawyer Burlingame is trying to secure. Burlingame's cohort Logan murders Hogan, and is caught and arrested. In the trial, Burlingame forces Kerry to admit his past, and succeeds in preventing Kerry from receiving bank assistance. When Kerry is shot, Kitty opens a letter from Kerry's wife that he had been carrying for five years, and cables her. Kerry's wife arrives and informs him that his last bet in England had turned out to be a $20,000 winner. Kerry is able to use the money just in time to foil Burlingame and secure the property, thus winning prosperity and the affections of his wife.

A man assists a woman to dispose of the body of her stepfather....

Holmes goes on the trail of a Rembrandt painting, stolen by a drug-addicted artist.

Kid Kelly, a gangster in New York's Lower East Side, attempts to rob Goldberg's millinery store. When the police arrive, Flo Haines, who had come to the building to look at an apartment, hides. When the police find her, they charge her with the crime, but the Kid turns himself over to the law instead. After his release, he again meets Flo, who works in an artificial-flower factory by day and at Reverend Roberts' relief mission by night. The Kid soon falls in love with Flo, and his jealous sweetheart Mamie tricks her into coming to her apartment, where she drugs her and turns her over to Joe Carelli, the flower factory's lustful owner. The Kid saves Flo, but when Carelli is found murdered the next day, he is arrested for the crime. The confession of Annie, who had stabbed Carelli in a jealous rage, frees The Kid, who reforms himself and marries Flo.

Young thief “The Bat” to distract an old bookseller, while his partner, “The Fly,” robs the till, purchases a book at random. Later, after a chase and escape to the Devil's Roost, Old Meg's refuge for thieves, he takes the book from his pocket and is about to throw it aside when the title attracts him, "Electricity Made Simple." Intrigued, the volume opens a new life to him and in time enables him to rescue the bookseller’s daughter Bess when she falls into trouble.

The secret formula for the world's most powerful explosive has been stolen from the U.S. government. William Brown, a clerk who aspires to be a detective, has just received his badge from some anonymous Midwestern agency, and manages to get himself embroiled in the intrigue.

A man tries to burgle his own safe on the same night that a professional criminal attempts it.

A baronet's son marries a barmaid in order to qualify under the inheritance terms of a will.