It was quite possible that the guards who had been sent down to search for him--or one of the guards, at least--had been angry at his superiors. Just a quick look and to hell with it--that must have been his attitude. It made sense in another way. They wouldn't suspect the bin because the bin was so conspicuous and obvious a hiding place. The Purloined Letter sort of thing. Crawl into an empty coffin at a funeral and no one will give you a second glance. All dead men look alike. The Master Sequence Selector compartment was a coffin, too--a big, all-metal coffin arching above him and hemming him in. If he hoped to get out of it alive, he'd have to do more than just beat on the lid with his fists. Almost instantly he was ashamed of his thoughts. He had been extremely lucky so far. The funeral was over, the sod firmly in place. They would not be likely to dig him up on suspicion, and he could stay buried until he starved to death. The worst would be over when they found him. The thirst torment would be the worst, but if it became unbearable he would still have the choice of surrendering himself. Quite possibly he _would_ die of thirst. Quite possibly he could shout his lungs out and still remain trapped. If a search had been made and they had failed to find him, sullen anger might have tempted them to do an unthinkable thing. They might have locked the door of the compartment so that the corpse would have no opportunity of escaping prematurely and making them look like fools. Corriston was just starting to climb out of the bin to investigate the truth or falseness of that utterly demoralizing possibility when he heard the sound. It was a very peculiar sound, three or four times repeated, and he heard it clearly above the low drone of the Selector's automatic controls. He stood up in the bin, straining his ears. It came again, louder this time. It was only a short distance away and it was a voice sound, unmistakably a voice sound. He climbed out of the bin, grasped a metal rod that projected from one of the cross-beams, and descended cautiously to the base of the Selector. The droning increased for an instant, rising to a whine so high-pitched that he could no longer hear the voice. He started moving around the edge of the Selector, keeping well within its shadow, watching shafts of dull light move backwards and forwards across the floor. He hardly expected anyone to leap out at him. The voice had not seemed quite that near; in fact, he was by no means sure that it had come from the compartment at all. But if not from the compartment, where? He found out quickly enough. There was a square, windowlike grate a few feet from the Selector's automatic control panel, set high up on the wall. A faint, steady glow came from it.