Plot

Episode 1: "The Vanished Jewels" Patricia Montez, niece of the wealthy Eleanor Van Nuys, is the most popular girl in the American colony of Paris. Her one idea is to bring comfort to the suffering poor. Her aunt, Mrs. Eleanor Van Nuys, is likewise charitably inclined. The Children's Asylum, a refuge for orphans, is the principal hobby in Mrs. Van Nuys' scheme of charity. To her friends, Patricia is affectionately known as "Pat." The result of Pat's popularity has been to give the spirited girl an excellent opinion of herself, and when Phil Kelly snubs her she resents it and resolves to go to any length in retaliation. Kelly is a famous detective, known all over Europe as "The Sphinx." Pat's first venture, in retaliation for Kelly's rudeness, is to steal her aunt's jewels. She then notifies Kelly. Pat hides the jewels in her dressing table drawer. They are stolen by Jacques, the butler, who takes them to the rendezvous of his fellow Apaches, the Café Chat Noir. Pat has noticed Jacques' suspicious conduct and follows him to the café. She is followed by Phil Kelly and two of his assistants. Pat is disguised as an Apache's sweetheart, and bribes her cabman to assume the role of her lover. They enter the café and participate in the festivities. Pat sees Jacques displaying to his pals the Van Nuys' heirlooms. By deftly whirling her dancing partner to the table where Jacques sits, she manages to stumble and strike the butler's arm. The jewels fall from Jacques' hands. Pat picks them up and as she is leaving the place Phil Kelly confronts her. In her surprise, Pat drops the gems upon the steps. She dodges past the detective and makes her way home. Kelly observes the jewels lying on the ground, and pocketing them, departs.—Moving Picture World synopsis

Episode 2: "Suspected" When "Pat" drops the jewels in her hurry to escape from Detective Kelly, she dashes into the house of a poor woman, who lives near the street entrance to the Apache café, the Chat Noir. She begs the woman to hide her, and lies on a bench, covered over with a blanket, while Kelly searches for her in vain. When the detective has left Pat promises to repay the woman for her kindness. Kelly plans a surprise for the Apaches. He enters suddenly and holds them up at the point of a gun, while the police guard the other exit through the sewer. Kelly shoots out the lights and there is a fight in the café in the half darkness. Most of the Apaches make a run for the door, but some of them hide behind the bar. Many of the gang try to escape through the sewer, and there is a terrific fight with the police, in which several on both sides are drowned in the sewer. The next day Kelly calls at the Van Nuys home to return the jewels. He tells Pat that he has seen a girl at the Chat Noir who looked much like her. Pat is as good as her word and sends many gifts of food and clothing to the woman who befriended her. A shock awaits her on her return. Her aunt has received bad news from her lawyer. Poor investments have caused her fortune to dwindle, and she is almost penniless. Pat comforts her aunt, and says that she has a way to regain the money. She sends for the butler, and intimates to him that she knows all about his real avocation. She intimates that she wishes to join his band. He tells his accomplice, Silk Donahue, to be at the Café Chic at 9:30 that night. Pat and her aunt are also on hand at 9:30 and Kelly is there with his men. At a nearby table is a pearl dealer, with a fine string of pearls. Pat sees them and says to her aunt that they would pay their debts. Suddenly the lights go out. When they are turned on again the pearl dealer is lying face down on the table and the pearls are gone. Kelly will not allow anyone to leave the room. He finds a handkerchief of Pat's near the man's chair and orders all to be searched. He is convinced that the thief is found, and is ready to snap handcuffs on Pat's wrists.—Moving Picture World synopsis

Episode 3: "The Capture" When Phil Kelly, the Sphinx, reached the table at which Patricia and her aunt were seated in the Café Chic, he returned the handcuffs to his pocket and Pat smiled tauntingly. The Sphinx stationed men at every exit and gave orders that the guests be searched. They failed, however, to find the Dupont pearls, as Pat had slipped them into the outside pocket of Kelly's coat. And when he invited Mrs. Van Nuys and Pat to accept his escort to their home they accepted and Pat again secured the pearls by slipping her hand into Kelly's pocket while seated next to him in the cab. Account of her exploit at the Café Chic, the Apaches decided to crown her as their queen. Among those who attended the coronation were Phil Kelly and several of his assistants. Pat wore as her "coronation robes," a black velvet blouse and black tights. Scarcely had the Apaches assembled when Kelly tried to arrest everybody present. But the Apaches fled through the numerous passages leading to the network of sewers. Kelly captured Patricia after a long chase and carried her to his own apartments still masked and disguised in her Apache garb.—Moving Picture World synopsis

Episode 4: "Facing Death" Safely arrived at his own room with his captive, whom he has carried on his shoulders from the sewers where he had captured her, "Sphinx" Kelly seats the girl in a chair and throws off the cape which had previously concealed her features. Great was Kelly's chagrin to discover that the girl whom he had presumed was Pat was not his fair tormentor by any means, but another girl whom Pat had dressed in a costume like her own to fool the detective. For some time Patricia refrains from activities and "Sphinx" Kelly imagines that his tormentor has given up her practices of trying to humiliate him in perpetrating crimes and misdemeanors. But at an utterly unexpected time, Pat resumes her work. It came about, this time, at the Paris Academy where Pat decided to thwart a scheme to cheat out of his just reward the rising young artist she had befriended. Pat had posed for the pictures and her old enemy, Stephen Dupont, the art dealer and money-lender, who had previously suffered from the girl's depredations, was determined that a cheap daub he had caused to be entered for the grand prize should get the award of judgment. Pat overhears a conversation in which Dupont arranges to bribe the committee of award. Pat breaks into the Academy, transposes the pictures, and the award goes to a certain numbered picture, when the drapes are drawn it is Pat's nude likeness that gets the prize. In celebration of her victory Pat assembles her friends at the studio of her artist protégé, to have a jollification. Dupont hears of the plan and brings a gang of ruffians to clean up the place. Kelly also knows of the party and goes there in time to enter into the fray. There is a general fight, of fierce and rough-and-tumble sort, that ends in Dupont spiriting Kelly away in an automobile. Pat follows with her Apaches, and breaks into the house where Kelly has been made a prisoner. Kelly is in a room on the ground floor where a drove of alligators are kept in a tank. The floor is being drawn from under Kelly, that he may fall into the water and be at the mercy of the hungry alligators. Pat is in the room overhead, breaking through the ceiling as the episode ends with Kelly hanging precariously to the wall of the room, with the alligators waiting eagerly in the tank below for their expected breakfast.—Moving Picture World synopsis

Episode 5: "The Demon of the Sky" Patricia and one of her Apaches work desperately to tear up the floor of the room above the water-tank, over which Kelly is suspended. Through the floor Pat calls encouragement to Kelly, who is gratified to find the girl who has tormented him now coming to his rescue. When they had made a hole large enough, a rope is passed down to Kelly and he is drawn up. At a society leader's garden party jewels of great value are exposed and Patricia with her aunt are invited guests. When Pat learns Kelly has been employed to guard the jewels, she decides to demonstrate again that Kelly is not so adept as his friends think he is. She has found among the Apaches an aviator and instructs him to hover over the grounds during the party and at a signal to drop bombs, then to sail to the hangar and await developments. The exploding bomb creates great excitement and when the guests rush from the house the girl steals the jewels. Kelly suspects Pat and follows her. She rushes to an automobile and is driven to the hangar, closely followed by Kelly, in another machine. Kelly and his men attack Pat and her assistants and in the fight Kelly is knocked senseless. Pat and her aviator ascend, but the machine acts badly. Investigation proves that there is a man lying senseless on one of the wings of the biplane. As the machine starts to plunge downward, Pat is astounded to discover that the senseless man is Kelly. They are saved by a stroke of good fortune, as the machine crashes into the upper branches of a tree, the force of its fall being thus broken. But the gasoline tank explodes and flames envelop the machine and its helpless passengers.—Moving Picture World synopsis