Mario Majeroni

When a couple of scammers hold young Alice Faulkner against her will to discover the whereabouts of letters whose dissemination could cause a scandal affecting the royal family, Sherlock Holmes decides to take over the case. (Considered lost, a copy was found in 2014, in the vaults of the Cinémathèque Française.)

A European royal couple come to New York to sell some of the royal family's crown jewels. A gang of international jewel thieves is planning to steal the gems, so a private detective is assigned to guard them. Unfortunately the private eye turns out to be a bumbling, inept fool--or so everyone thinks.

Franti, an organ grinder of the poor districts of New York, has a daughter, Isola, who sings to his street piano's accompaniment.

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.

Young Angus Burke accidentally shoots the sheriff, who is leading a posse to get the boy's father, a thief. Angus' mother dies, and he is taken to trial alone. Found not guilty, he is given a job with the local newspaper office. He leaves when several citizens object to his presence--to return several years later. He takes over the newspaper and saves the townspeople from a gang of crooks.

On the lam from the New York Police because of a false murder charge, playboy Brooke Travers escapes to a Central American banana republic.

The dashing but arrogant Prince Michael Fedor Lubimoff has to flee Tsarist Russia after falling into disgrace and settles in Monte Carlo, where he resumes his life of debauchery while World War I ravages the fields of Europe… (Partially lost film; reels 3 and 9 of a total of 11 are missing.)

A pickpocket falls in love with a newspaperman. When he is sent off to war and she disguises herself as a boy, joins a gang and sets out to save him.

While his daughter, Consuelo, is visiting the United States, Emanuel García, the Mayor of Alcorta in the Argentine, arranges for her marriage to Juan Martin, in return for Martin's financial assistance. On her return, Consuelo, who is in love with Philip Sears, an American engineer working in Argentina, refuses Juan but gives no reason. Juan is furious with outraged pride and soon kills Rafael Cornejo, the son of a senator, when he flirts with Consuelo.

A European Ruler falls in love with an American.

When Princess Marie of the Balkan kingdom of Viatavia falls in love with Captain Rudi of the King's Guards, her father quickly arranges her marriage with the king of a neighboring country. Although Marie and Rudi are secretly wed by a Gypsy, the duke ignores the marriage and exiles Rudi. When a child is born to Marie, she declares to the king that it is Rudi's and is thereafter banished to a convent; however, Rudi returns and helps Marie retrieve her child from the palace, and they find happiness in another land.

The hunter becomes the hunted, an officer of the Royal Mounted, fleeing, fighting for his life. Guided to a secret valley in the frozen North by a hot-blooded French-Canadian beauty, with a secret of her own...

Annette is in love with Sheriff André Porel, but her father Gaston, promises her to Paul Gerard, after Gerard witnesses Gaston kill Indian Charlie. Despondent, Annette considers suicide, but Gerard drinks the poison by mistake. Annette is convicted of murder and is being led to her execution by André when an avalanche buries the gallows and Gaston. The villagers take this as a sign of Annette's innocence; she is released and marries André.

The disgrace and suicide of her father drives Eleanore Marston from her comfortable existence into a life as a department store clerk in New York. There she meets wealthy Powers Fiske, who offers her a life of luxury if she will consent to an operation on her brain which would deprive her of her memory.

William Baldwin, ruined in business by his partner, John Blaisdell, implores Blaisdell's aid, and receives in answer a five-dollar bill across the face of which is written, "Spend this for a gun and use it on yourself."

Nick Carter investigates the mysterious death of a man attending a Spiritualistic seance held in the home of a psychic scientist, friend of the man who suddenly died.

Henri Le Rocque's arrival in an island village causes much anger when he insists upon advanced rental for the land he owns. Accompanying Le Rocque is his nephew Paul, who is recovering from a broken heart. One day, little flower girl Fleurette visits the Le Rocque estate to make a present of a rare flower and is shot as a trespasser. She is nursed back to health at the mansion, and Paul falls in love with her. However, trouble is brewing in the village which will endanger all their lives.

Madame Vervier, a sophisticated woman, sends her daughter Alix to live with Owen Bradley's parents in London.

Young Hindu woman Radha, becomes best friends with Captain Raymond Townsend during his service in India, but he soon goes back to England to tend to the estate of an uncle who has just died. Then, Ramlan, the sword maker who raised Radha, is arrested for taking part in an anti-British uprising, and before he goes to jail, he decides to tell Radha the story of her birth, her real father, Captain Brooke, died of a drug overdose, and her destitute mother then entrusted her to Ramlan. After learning about her background, Radha goes to England to claim her rightful inheritance from the estate of her late grandfather, who is also Raymond's uncle. Raymond is delighted to discover that his Hindu friend is really a white woman, and after dividing the estate with Radha, he brings the fortune back together by marrying her.

A tricky woman criminal, in league with an international crook, falls in love with the honest detective tracking them.