This person had been hurrying along the trail, more than ten minutes behind Hoyt, and came upon him as he was toiling with the ponderous boulders. At the instant of seeing him, the stranger darted behind a rock and watched him with a deep interest. He kept himself hidden until Hoyt had gone, and then seemed for a moment undecided whether to follow him or to investigate the reason of the piling up of the stones in the cave. "I can follow him after I've taken a look," he muttered. With this determination he ran over to the cave and looked in and tried to make out the meaning of the heap of stones. "Now, what in the world did he do that for?" he asked himself. "Well, whatever he did it, for, it'll be worth my while to learn it, for I know he'd never 'a taken all that trouble for nothing. He isn't the sort to work like that for fun." So the newcomer went over to the pile and studied it; but making nothing of it, owing to the care with which Harry had been covered up, he doggedly set to work to remove and undo all that Hoyt had done. He had not gone far with his labors before he caught sight of something that looked like a garment. He turned pale and hastened to satisfy his fears. "He's murdered somebody and hid him here," he said. "I wonder--" he stopped and leaned up against the pile; "but no, it couldn't be." Whatever it was that he felt could not be, evidently kept recurring to him, as he worked with feverish haste, until he had uncovered so much of the body as enabled him to feel it and to discover that it was still warm. "Only just killed him, too!" he ejaculated. The horror of it stopped him for an instant, and then he returned to his task with redoubled energy; so that he was undoing in seconds what Hoyt had taken minutes to accomplish, being assisted to that end by a strength that Hoyt had lacked. "Alive! Harry Wainwright!" It seemed as if the two discoveries had come together, and as if the fact that it was Harry Wainwright had more interest for the toiler than the fact that the discovered person was merely alive. And how the remaining stones and brush flew after the discovery! And as soon as it was possible to do it, Harry was lifted to an upright position, the gag taken out of his mouth and his bonds cut. "Bill Green!" was Harry's first exclamation. "How did you happen here?" "Oh, it's a long story! but anyhow, I'm glad I did come here." "It looks as if you had my existence in your charge," said Harry, his half-jesting manner belied by the earnest way he caught the two hands of the boy who had thus, for a second time, rescued him from a horrible death. "Well, anyhow," replied Bill, "that fellow Hoyt don't seem to have any chance against me. Now, isn't it wonderful? But let's get out of here." "Stop a minute," said Harry. "Let's put these things back just as they were. I don't know but I'd better try to keep dead again."