Narva shrugged her shoulders. "He comes for no good," she said. "At last he finds the way from Guatavita. He seeks treasure. With him are traitors to the Land of the Condor. He fought Anitoo. He conquered him. He is on his way to the palace. I heard him with his men on the iron path. They are many. Defend yourself, Sajipona! We have very little time." The appeal was received exultantly. From Una, however, there came a cry of dismay. "If there is danger," she exclaimed, "what will become of my uncle and the others?" Narva chuckled to herself. "There is no danger to them," she said. "The fat man will have trouble to run, and the old woman will die because she is always afraid." Her grim humor fell on unappreciative ears. At Sajipona's rebuke she lapsed again into silence, first giving a grudging explanation of what she had done with the party of explorers. The latter, it appeared, were practically prisoners where Narva and Una left them. There they must remain, unless they were discovered by the hostile band that was believed to have invaded the cave, in which case their release would mean capture by Raoul and his men. The possible consequences of this increased Una's alarm, and at Sajipona's command Narva grumblingly set forth to effect their rescue. As success depended on her speed, Una was prevented from returning with her. She was thus left alone with Sajipona, whose plans regarding David now absorbed her attention. Here, however, she encountered a reserve which she could not break. Every attempt to gain information was repelled, and in a manner intimating that Una's interest in David was unwarranted by any previous friendship between them. "He does not know you," exclaimed Sajipona exultantly, but with a note of uneasiness that was not lost on the other. Una, concerned for David's safety, ignored the unspoken challenge. "What is to become of him? Why is he here?" she demanded. "What is that to you?" was the fierce retort. "He doesn't know even your name. He is happy. He depends on me." "That may be. But there is a mystery. Tell me what it all means. If he is happy, if there is nothing more to be said or done, I will go. Only--tell me." "You will not go--not until there is no longer a mystery, as you call it."