* * * * * Dantor was fumbling with the mechanisms of the remote control which Tiedus had used in returning the basket lift to the car that had brought the two Earth men from Ilen-dar. Again and again he returned to his manipulations after peering anxiously upward. But the basket did not respond to the call. They were marooned atop the empty shell of the Tritu Anu! "Carson! Ulana! Where are you?" the aged scientist shouted above the din, his face a tragic mask, his lips compressed with anxiety and disappointment. They grasped him to reassure him, each taking a hand. Carson, placing his lips close to the old man's ear, inquired anxiously, "What's the trouble?" "The car does not respond. Something has happened to the motors, probably on account of the vibration. I can do nothing." And then, piercingly through the thunderings of the copper shell, a voice broke in--Ianito's voice. "Dantor!" it shrieked. "At last I have found you. I need your help immediately. Wait there for the monorail." Dantor gripped them tightly to enjoin silence. Ianito had located the scientist with the searching ray and was still watching and listening at his crystal. He seemed not to know that Blaine and Ulana were there. "Very well, oh Ianito. I shall wait," Dantor shouted. "It is good. There is important work to be done." Ianito's words trailed off into the maelstrom of sound that swirled about them. "He's cut off," the scientist yelled. "There is but one chance now. You must come with me, depending on absolute silence and your cloaks to deceive them. It is the only way." * * * * * Ulana clung to him there in the terrifying bedlam and Blaine's fingers strayed to the comforting butt of the ray pistol. Whatever happened there were a few charges left; blasts of energy that would serve at least to postpone the end for Ulana. Or, if worse came to worst-- The sudden rush of a monorail car high overhead interrupted his thoughts. "Close to me now!" Dantor shouted; "but have a care lest one of them touch you and discover--" A cable-hung cage dropped swiftly to the roof and they crowded in beside the scientist. Quickly it whisked them aloft to the higher plane. In the monorail car Blaine held the girl close, and they trod softly as they dodged the guard at the porthole and stepped into the passenger compartment. Two of Ianito's technical experts were there and a crew of at least a dozen of the green-bronze giants. Unseen by any, the couple tiptoed to the farthest corner of the compartment and took seats in a recessed section. With a quick jerk and the rising whine of motors, the suspended vehicle started back in the direction of Ilen-dar. In earnest conversation with Ianito's engineers, Dantor affected an air of nonchalance that was artfully disarming. The Llotta suspected nothing as the car continued on its way.