With glittering eyes fixed upon the girl, Purdy laughed a wild shrill laugh, that echoed among the rocks like a sound from hell. The words of the Texan burned like words of living fire. "_Goin' to be married tomorrow!_" Deliberately he raised his gun and fired--just at the instant the bay mare threw up her head with a nervous jerk to rid her mouth of the feel of the cruel spade bit. The next second she reared high and crashed to the ground carrying her rider with her. With a loud cry the Texan sprang to his feet and started for the girl, and at the same moment the horse-thief that the big blue roan had knocked senseless among the rocks rose to his feet and levelling his gun at the running man, fired. At the sound of the report the Texan staggered, turned half-way round and fell sprawling among the rocks. Purdy leaped to his feet and, gun in hand, started for the prostrate Texan. The rock-ribbed valley became a roar of noise. Janet, one leg pinned in the stirrup, fired across the body of her horse. Fired swiftly and accurately. The running Purdy staggered this way and that, drew himself stiffly erect, threw his hands high above his head and spun around like a top, and as the sound of the girl's last shot died, pitched forward and lay very still. From the rock buttress to the left, Janet saw men running toward her. She could not tell whether they were friends or foes--it mattered not--her gun was empty. At thought of her gun, she gave vent to a pitiful little cry and covered her face with her hands. Then the men were at her side pulling at the body of her horse. Her leg was freed and someone stood her upon her feet. She lowered her hands and stared into the bearded face of Cass Grimshaw! "Good shootin', sis!" he patted her shoulder gently, "why, what's the matter? D'ye think you missed him--look!" he pointed to the body of Purdy. "Oh--oh!" moaned the girl and covered her eyes again. "I've--I've _killed_ a man!" Grimshaw looked puzzled: "No, sis--you ain't killed no _man_! Not by no stretch of imagination he ain't no man!" "But--he's a human being--and--I killed him!"