"The Moving Picture Girls at Rocky Ranch" gave Ruth and Alice a taste of cowboy life, and though rivals tried to spoil some of the valuable films, they were not altogether successful, even though a prairie fire figured in their schemes. The girls, with their father, had recently returned from a perilous trip. This is told about in the volume immediately preceding the one you are reading--"The Moving Picture Girls at Sea." In that Alice and Ruth proved, not only their versatility as actresses, but also that they could be brave and resourceful in the face of danger. And they more than repaid the old sailor, Jack Jepson, who saved their lives, by doing him a good turn. "Well, life at Oak Farm will be vastly different from that on the _Mary Ellen_," remarked Alice, as she looked from the automobile as it swung along through the New York streets on the way to the park. "Yes," agreed her sister. "But I like it up there." "There are going to be some strenuous times," said Paul. "We've got to do some hustling work." "All the better," declared Russ. "I like to keep the film running. This sitting about all day and reeling off only ten feet makes me tired." "You like action!" laughed Ruth. "Yes; and plenty of it." Oak Farm was the property of the Apgars. There was Mr. Belix Apgar, the father, Nance, his wife, and Sandy, an energetic son. The farm was located in New Jersey, about forty miles from New York, and it provided a picturesque background for the scenes evolved by Mr. Pertell and his company. It was during a scene on the farm, some time before, that a valuable discovery had been made, which endeared the moving picture girls and their chums to the Apgars. "How did Mr. Pertell come to pick out Oak Farm for the war plays?" asked Ruth, as the automobile bounced along. "Well, I suggested it to him," answered Russ. "I remembered the background, and I felt sure we could get all sorts of settings there to make the proper scenes. There are hills, mountains, valleys, streams, bridges, waterfalls, cliffs and caves. Everything needed for perfectly good war dramas." "How did they come to want that sort of stuff?" asked Paul. "Oh, war stuff is going big now," Russ answered. "All this talk of preparedness, you know, the war in Europe, and all that. The public is fairly 'eating up' war pictures." "I hope we don't have to fire any guns!" exclaimed Ruth, with a shudder. "You'll see and hear plenty of 'em fired," Russ told her. "There are to be some big battle scenes and cavalry charges. But one of you will be back of the firing line, I believe." "How is that?" asked Alice. "Well, one of you girls is to be cast for an army nurse, and the other will be a spy. The spy has to carry a revolver." "I'm going to be the spy!" cried Alice, impetuously. "I know how to shoot a gun." "I'd rather be the nurse," murmured Ruth, and truly she was better fitted for that part.