"But," said Karl, thinking aloud rather than meaning to interrupt, "what has all this to do with me? Why does the government of this Zar want me?" The dwarf bent close and eyed him cautiously. "Poor kid!" he whispered, "it doesn't seem right that you should suffer for something that happened when you were born; something you know nothing about. But the Zar knows best. You--" There came a stabbing pencil of light from over Karl's shoulder and the green eyes of the dwarf went wide with horrified surprise. He clutched at his breast where the flame had contacted, then slowly collapsed in a pitiful, distorted heap. Karl recoiled from the odor of putrefaction that immediately filled the compartment. He whirled to face the new danger but saw nothing but the padded walls. Then they were in darkness save for the blinking lights of the control board. He was thrown forward violently and the piercing screech of compressed air rushing past the vessel told him they had entered the receiving tube at their destination and were being retarded in speed for the landing. This much he had gathered from the explanations of the now silenced dwarf. Laro, the other Moon man, remained mute at the controls. His companion evidently had talked too much. * * * * * The vessel had stopped and a section of the padded rear wall of the compartment moved back to reveal a second chamber. There were three other occupants of the ship and Karl knew now at whose hands the talkative Moon man had met his death. One of the three--all wearers of the purple--still held the generator of the dazzling ray in his hands. He decided wisely that resistance was useless and followed meekly when he was led from the ship. Endlessly they rode upward in a high-speed lift, dismounting finally at a pneumatic tube entrance. A special car whisked them roaring into the blackness. Then they were shot forth into the open and Karl saw the light of the sun for the first time in many years. They were on the upper surface of a great city, Dorn, the capital of the Continental Empire. The air was filled with darting ships of all sorts and sizes, most of them being pleasure craft of the wearers of the purple. To Karl it was the sudden realization of his dreams. He was one of them. He, too, should be wearing the purple. Then his heart sank as one of his guards prodded him into action. His dream already was shattered for they stood at the entrance to a great crystal pyramid that rose from the flat expanse of the roofs of Dorn. It was the palace of the Zar.