The Martian chuckled. "But thanks to a breast armor I still belong to this plane of existence. I admit though that you gave me a great scare when you nearly, but not quite, escaped. My four bombing fliers supplied an adequate diversion for the Municipal Patrol, didn't they? And my Sadu moth, radio controlled automaton--it functioned perfectly!" * * * * * Shelby rose from the bunk and sauntered toward his captor. Hekalu made no move to stop him. "Now that you have Miss Darell and me nicely trapped, what do you intend to do?" Shelby inquired coldly. The Martian laughed. "You have a very inquisitive nature, Mr. Shelby," he said. "What do you expect me to do? Continue with my plans which you so almost successfully spoiled, my friend." Here Hekki's voice became suddenly excited and husky; his lips curled and his eyes took on the fanatical look of a megalomaniac who sees within his grasp his dream of power. "Very soon," he lisped, "we strike. Mars first, then your planet. I shall be great--greater than all the combined rulers of the millenniums gone by, and Janice here, will share my greatness." The slender arm of Selba stole around the waist of the girl beside him. She did not try to draw away. "That last little idea maddens you, doesn't it, Mr. Shelby?" he added with a sneer. Shelby felt a flush of heat in his cheeks. What happened to Jan that she should permit the noble to be so familiar with her? Had she been dazzled by his wealth and his promises of what stupendous things the future would bring? For a fraction of a second something seemed to let go in the Earthman's mind, and then he saw the fleeting look in the girl's eyes. He checked the impulse that had urged him to send a fist crashing into the face of the smirking noble. Certainly such an act of violence could accomplish no good. Shelby looked at the black monster. It was standing beside the table, and leaned forward, so that its knuckles rested ape-like upon the floor. It was gazing narrowly at the Martian, and its mouth opened and closed nervously. There was a faint something in its almost blank face which suggested to the Earthman that the bond of friendship between the Prince of Selba and this weird devil of the void was none too strong. Hekalu withdrew his arm from about the girl. He nodded toward the bejeweled nightmare. "I had almost forgotten my lieutenant here, Mr. Shelby," he said. "He is the ruler of the empire from which I am recruiting my forces--my chief ally. Since his people do not employ a language of sounds, he has no vocal name; but for the sake of convenience I have christened him Alkebar, which means 'The Unknown.' He was my companion on my recent trip to Earth, for he wanted very much to see what a beautiful place is your world." There was a sinister hint in these last words.