The Greatest Power

Sylvia Mason, a mysterious girl, lives in a cabin by herself and sells her bead work to the visitors at a large hotel nearby. At the hotel, Sylvia meets Easterner Henry Hilliard, who falls in love with her, but she refuses to marry him and will not explain her reasons. Thus Henry returns East without learning that Sylvia's father had been murdered by his private secretary Jack Leslie in revenge for her refusal to marry him. One night after Henry's departure, Leslie, now known as the outlaw "The Shadow", breaks into Sylvia's cabin. There is a struggle that leaves Sylvia unconscious, and when she awakens she finds a note claiming that because Leslie has violated her, she must marry him.

Young Annesley Grayle, weary of a gloomy, uneventful existence with her aunt, accepts the proposal of a young American that she pose as his wife. Later, they are actually married. When, at a ball, she hears her husband accused of stealing a valuable diamond and realizes that he is indeed a thief, she hides the jewel to save him.

Brothers Tom and Bob Fitzgerald are both members of the Northwest Mounted Police. Bob falls in love with schoolteacher Joan Cameron when he saves her from an attack by Fu Chang.

Carlotta has been brought up in an Italian convent, unaware that she is the illegitimate child of American architect J. Winthrop Drake. When her mother, an Italian opera singer, dies, Drake finally learns of Carlotta's existence and brings her back to New York with him without revealing the truth of their relationship.

An oil tanker burns at sea, and Molla Hansen, the captain's daughter, is the only survivor. Her rescuer, lighthouse-keeper Silas Martin, is fatally burned, and begs Molla to look after his daughter, Pearl. Meanwhile, Captain Rodney O'Malley, Molla's grief-stricken fiancé, departs on a long cruise. Two years later, Pearl is seduced by rum-runner Charley Watts, although she blames engineer Ira Meers. Molla learns of Pearl's pregnancy and holds Ira at gunpoint in the lighthouse. When Pearl discovers that Charley is already married, she locks him in the lighthouse tower, floods it with gas, and hurls a lighted lantern at him. Pearl and Charley are killed, but Ira recovers. The explosion signals Rod's ship, and he and Molla are reunited. A lost film.

Irene Fletcher, the pampered daughter of a Long Island millionaire on the brink of bankruptcy, has two suitors - struggling architect John Marshall, and wealthy clothing designer Charles Munson. Scorning her father's plea for her to curb her passion for beautiful clothes and live more modestly, she trips and is knocked unconscious. In a dream, Irene's father goes to Munson for financial assistance and Munson agrees, in exchange for her father agreeing to try to influence Irene to marry him. When it is announced at Irene's birthday party that she and Marshall have secretly married, Munson refuses to lend the money to Irene's father, who then kills himself with a pistol. After a series of tragic events, Irene awakens, and decides to marry Marshall.

During a carnival in Venice, Horace Pierpont, a wealthy American (Lewis Stone), falls in love with Fay Kennion (Virginia Valli). Their romance is derailed when she goes over to his apartment and finds the vampy Fifi (Nita Naldi) there. Fay goes down to Algiers, where she marries a former sweetheart, Dr. Alan Mortimer (Edward Earle).

Rev. John Morton, who is determined to follow as closely as possible the teachings of Jesus, inherits a considerable fortune when his uncle dies. Shortly thereafter he succumbs to the wiles of Mary Carlson and marries her. To Mary's dismay, John uses his money for charitable work. When John learns that not only has Mary been unfaithful to him but she was also his uncle's mistress and became Mrs. Morton in order to share the inheritance she believed to be rightfully hers, he sends her away with his secretary.

Perryam is going through a round of bad luck; he is thrown out of school and loses at love. In search of a change, he heads for London, where he meets Audrey Nye, a former jazz baby who has gotten a responsible job on a newspaper. She helps Perryam get hired as a reporter.

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 mother and her son's lives are upended by the arrival of a wealthy flapper to their small New England fishing village.

One day Coventry Petmore leaves his wife and child to go out in the world and fight the social evils of divorce and loveless marriage. Circumstances lead him to the home of Judge Mitchell, where the judge's son, a minister, and his wife Beatrice reside. The minister does not believe in expressing affection to his wife, and Beatrice becomes enamored of her chauffeur Larry Price.

A blind orphan, Rose Duncan, who has a special talent with the violin. Jerome Trevor, a famed pianist, hears her playing and sends her to an uncle in New York so she can become educated. But the uncle is killed in an accident on his way to meet her and she is taken in by gang leader Bull Morgan. Morgan pretends to be her uncle to elude the police, and he sees the value of keeping her around as cover.

A young Acadian woman spends years searching for her lost love after the two are separated and forcibly relocated by the British.

Leaving his wife Rose for a few weeks and eager to do research for his new novel about the elderly, Henry Norman goes to live in a home for the aged, where Blossom, the home's young maid, falls in love with him. When she lets him know how she feels, however, Henry tells her that he has a wife, and then, his research over, he returns to her. He discovers, however, that Rose has eloped with his friend, Perry Westley, and that they both have been killed by a lightning bolt that struck Perry's car.