"Ah, no, Artana. You are needed here. What if Horta were to make a sudden attack? You must give us a guide, though, to show us the Great Cavern. And I will leave my chief signalman, Jorgens, so that we may keep in touch with you." Artana assented, somewhat cast down. Truly, the Great Cavern held a secret, and the Lord of the Peaks was as eager as any to learn it. But he regained his cheerfulness as they sought out the Queen. She was in the great chamber where Artana had first received the Earth-men. Erect and haughty, she sat on the central divan, regarding them with brooding eyes as they entered. So much Ross saw before his glance went to the slim figure beside her. He caught his breath. A dream! A goddess! This girl--ah, yes, the Princess Illeria. But a woman now! Not the scrawny girl of five years ago. Ross tore his eyes from her with a jerk. Artana was presenting him to the Queen Widow. "--Commander Ross, leader of the Earth-fleet, was a visitor at court five years ago," Artana reminded the Queen. She extended her hand, surveying him with a softening of her austere expression. As he bent over it she said in a harsh voice that was obviously held steady with an effort, "Commander Ross, you come at an unhappy time." Ross murmured condolences, then plunged into the subject that was filling him with impatience. "I seek permission from you, Queen, and from the Lord Artana to fly over the Caverns and report on conditions there." Queen Boada darted a sharp glance at Artana, then averted her head. "I see no occasion for such a flight," she said curtly. Artana stepped forward. "A rebellion, O Queen? Surely that is occasion enough?" She met his eyes, frowning. "But these are not our people." "Yet," argued Artana, "the Earth people are at peace with us." Ross saw the Princess regarding her mother curiously. Moore, too, was staring in frank astonishment at the Queen. As she sensed their intent regard she relaxed her rigid pose. "Oh, very well. But there shall be no fighting?" "None, O Queen," Ross hastened to say. Artana nodded with satisfaction. "There remains, then, the finding of a guide for the fleet. I could send Calisto--" The Princess spoke for the first time. "Calisto has not the gift of the Earth-tongue. Who guides the Commander Ross must speak the tongue he knows best." "That's true," muttered Artana, taken aback. "Who, then--" * * * * * The Princess was looking at Ross. Almost hostilely, he thought confusedly. Had she resented his long open stare? She was such a picture, clad in only a single filmy garment, caught at the waist with a gold twisted belt and cut tunic-like at the knee. Bare-armed, with softly swelling contours and a skin like peach down, she was an entrancing sight. His confused thoughts were set at rest. The Princess had a plan. "I shall go with the Commander Ross," she said. The Queen turned sharply. Artana scowled. "No, no!" he cried sharply. "If there should be fighting--"