Ruth and Alice really got into moving picture work by accident. One day two extra actresses failed to appear when needed, and Mr. Pertell, who was in a hurry, appealed to Mr. DeVere to allow his daughters to "fill in." They did so well that they were engaged permanently, and very much did they like their work. Alice was like her dead mother, happy, full of life and jollity, and her brown eyes generally sparkled with laughter. She was a rather matter-of-fact nature, whereas Ruth was more romantic. Ruth was a deal like her father, inclined to look on the more serious side of life. But her blue eyes could be laughing and jolly, too, and between the two girls there was really not so much difference after all. Soon after getting into moving picture work they became aware of a bold attempt to get away from Russ Dalwood an invention he had made for a camera. How Ruth and Alice frustrated this, and how they "made good," as Mr. Pertell put it, in an important drama, is fully told in the first book. The second volume was entitled "The Moving Picture Girls at Oak Farm; Or, Queer Happenings While Taking Rural Plays." The manager had made the acquaintance of Sandy Apgar in New York. Sandy managed his father's farm, in New Jersey, and Mr. Pertell took his entire company there, to make a series of farm dramas. A curious mystery developed at once, and did not end until the discovery of a certain secret room, in which was concealed a treasure that was of the utmost benefit to the Apgar family. "The Moving Picture Girls Snowbound; Or, The Proof on the Film," was the third book. To get a series of dramas in which snow and ice effects would form the background, Mr. Pertell took his company of players to the backwoods of New England. There they had rather more snow than they expected, and were caught in a blizzard. Also Ruth and Alice made a curious discovery concerning a dishonest man, and not only frustrated his plans to swindle a certain company, but also were able to save their father from paying a debt the second time. In addition they took part in many important plays. From the cold bleakness of New England to the balmy air of Florida was a change that Ruth and Alice experienced later, for on their return to New York from the backwoods the members of the company were sent to the peninsular state. In "The Moving Picture Girls Under the Palms; Or, Lost in the Wilds of Florida," is related what happened when the company went South. Exciting incidents occurred from the first, when the ship caught fire, and, even as it burned, Russ "filmed" it. But the company reached St. Augustine safely, and then came busy times, making various moving picture dramas. How the two sisters learned of the plight of the two girls whom they knew slightly, and how after getting lost themselves on one of the sluggish rivers of interior Florida, Ruth and Alice were able to render a great service to the Madison girls--this you may read in the fourth volume.