The Silent Mystery(1918)

Caravan of Death (German: Die Todeskarawane) is a 1920 silent German film, it was an adaptation of the latter half of the Karl May novel From Baghdad to Stamboul, and is now considered to be lost. The film featured Bela Lugosi playing an Arab Sheik pitted against European travellers in an adventure story set in the Sahara. It was the second of three films released by Ustad based on desert adventure novels by Karl May. Although Karl May’s widow praised the film, critics were unimpressed and it was a commercial failure.

Montgomery Seaton, one of the idle rich, pays more attention to his friends' business than to his marital situation.

In their small village, Romanian peasant girl Katinka Veche falls in love with the studious Jan Drakachu. Jan wins a scholarship to an American university eventually becoming a successful engineer. Unbeknownst to him, Katinka, whom he had to leave behind in the village, is sold into slavery by her cruel, dissolute father. Her owner, Victor Dravich, beats her into submission forcing her to become his mistress in his Syrian gambling den. When the house is raided, Dravich takes her on his travels around the world until they finally settle in a small Arizona mining camp. Broken, she sees Jan but is too ashamed to speak to him sending instead for her old tutor Boris. Upon arrival Boris kills Dravich but is shot by the sheriff. Katinka, now free, follows Jan to New York. After further travail the pair are finally reunited.

Mr. Williams, a stern father and man of wealth, disinherits his son Hugh, for marrying Rose, a seamstress. Twenty years later, although Sose is practically supporting her sick husband, their little store is taken from them and they are obliged to move, with Martha, their daughter, to the tenement district.

When New York playwright Richard Warrington returns to his home town, Republican bosses nominate him for mayor. The Democrats, alarmed at Richard's popularity, decide to unearth a scandal that will ruin his chances of winning and quickly discover that, months before, actress Katherine Challoner had spent the night in Richard's apartment. Although it simply had been the result of Katherine's fainting spell, the home-town Democratic newspaper turns the overnight visit into an illicit rendezvous between two lovers.

Bessie Allen, a girl of the slums, dances in the streets of the Lower East Side of New York to the delight of the crowds. She becomes an orphan when her father, in a drunken stupor, kills her mother, and then himself. Bessie is knocked down by the car of Mrs. Latham, a society matron, who takes an interest in the girl and procures her a job as a dress model.

George Bell, a wild young man, lives with his rancher father, Thomas Bell, in Paradise Valley, California. When George sells his father's favorite horse, Mr. Bell turns him out, and George becomes a grain salesman in St. Louis. Meanwhile, Polly Martin lives with her father Bill, an ex-businessman who has sunk to day-labor because of his addiction to alcohol. Bill frequently abuses Polly, and when he falls to his death from a high girder, Polly becomes a nurse in the Salvation Army in St. Louis. George falls in love with Polly after he saves her from the advances of a drunk, but she will not marry him because of his wild past.

In 1869, enemies of railroad magnate Richard Strong attempt to ruin him. Richard thwarts them, largely through the help of Charles Dalton, but then Charles tries to seduce Elinor, Richard's wife. Although she rebuffs Charles, Richard accuses her of infidelity, so Elinor leaves him and goes to Paris. Richard follows her, but, caught in the middle of the 1870 riots, he cannot get near her. Charles, also in Paris, finally convinces Richard that nothing had come of his interest in Elinor, but Richard now believes that Elinor no longer loves him.

When penniless Westie Phillips briefly meets wealthy Martha Gorham, he falls in love, but Martha forgets the encounter. Harry Arnold, courting Martha, invites her out sailing and arranges to have the yacht wrecked near an uncharted island so that he can be alone with her until rescuers arrive. Meanwhile, without knowing Martha is on board, Westie secures a position on the yacht.

For Nita Valyez, who is half-Spanish and half-Irish, Carlos represents potential violence and danger, two things to which she is both attracted and repelled. In contrast, she has only a passing interest in Big Jim, the town's honest, good-hearted sheriff. Then, after Carlos kills a faro dealer, he forces Nita to make an escape with him.

To help his dying father, assistant bank cashier Arthur Mansfield enters a fake sum in the bank's account book, but before carrying out the pilferage, he confesses to cashier Slayton, his superior. Slayton, who needs money to pay for his unsuccessful speculations, goes at night to take the money that Mansfield planned to embezzle, so that Mansfield will take the blame.

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.