"Neither do I--which is just why I'm asking. First Grossman goes into a mild panic; now you two are acting like the masked strangers in Act Two. Not to mention the fact--" the girl pointed out shrewdly--"that for a few minutes you quite forgot to talk like a college professor ... and addressed your alleged 'valet' as 'Bud'--" Rocky did remove his glasses. But this time he did not breathe on them, wipe them, and replace them as was the habit of "Dr. Roswell." Instead, he shoved them out of sight, and grinned at the girl. When he spoke it was in his natural voice. "All right, Miss Lynn," he said, "you win. I pulled a boner. Now I might as well come clean. I am not Doctor Rockingham Roswell at all. My name is Russell ... Rocky Russell ... and I'm here on Titan to--" But not at that moment did he tell Lynn Graham who he was, and his purpose on the satellite. For suddenly he paused in midsentence, his jaw dropping open, and his eyes widening to match. "Lord!" he gasped. "Look ... look at _that_!" The others, too, had turned to determine the origin of the rumbling sound. Now they saw it. A tremendous motor-roller trundling down the main thoroughfare of New Boston. A heavy roller bearing a ponderous burden ... a single, gigantic item. The appearance and purpose of this item was unmistakable, but its size.... "Manacles!" croaked Bud. "But ... but who ever heard of manacles that size! _That Thing is twenty feet in circumference!_" VI Humboldt Grossman entered the cavern cautiously. It was dark in there, but not altogether dark. The ever-present luminescence of the chamber walls lent an eerie glow by which could be seen the giant figure huddled at the far end. There had been bonds upon the wrists and ankles of this figure, but now the frayed ends of snapped hawsers dangled loosely as the creature pawed fretfully at adamant walls and ceiling. At sight of the monster, Grossman faltered, stunned. To the Titanian behind him he choked hoarsely, "He--he still grows!" "Yes, Master. Already he must crouch to avoid being crushed by the cavern's roof. Each hour he grows faster. In a day ... half a day ... perhaps less ... he will die in here if we do not let him out." Grossman smiled. It was not a pleasant smile. "Have no fear. Before that time, he will be outside--under my control!" He stepped forward into the cave. The creature's eyes turned questioningly toward this tiny mote of life which dared approach him thus, stretched forth a hand to crush the annoying insect. But from a curiously-shapen tube in the insect's claw leaped a lancet of flame. A gout of red agony that scorched and blistered his palm. The giant howled and pulled his hand away. Grossman smiled. Good! Who holds an adversary in fear of pain possesses a slave. Now, if only the creature were telepathic--"You!" he thought, his thought directed and intensified by the menavisal unit in his helmet, "have you intelligence? Can you understand me?"