"Don't look over there," said Bell harshly. "There was a woman in this house and she told me what happened, though I'd guessed it before. The sub-deputy was here last night with a party of friends. Newly enslaved, some of them. He entertained them.... Up at Ribiera's place a girl told me she and her husband had been shown a Secret Service man. He went mad before their eyes. It was an object-lesson for them, a clear illustration of what would happen to them if they ever disobeyed. I imagine that something of the sort is used by all The Master's deputies to convince their slaves of the fate that awaits them for disobedience. The local man had brought a party up to watch two men go mad. After that sight they'll be obedient." * * * * * He reached a shed, huge, but in disrepair. Monster doors were ajar. Bell heaved at them and swung them wide. A small, trim, two-seated plane showed in the shadowy interior. "This is for emergency use," said Bell grimly, "and we face an emergency. I'll get it out and load it up. There's a dump of gas and so on here. You might look around outside the door, in case the one man who got away can find someone to help stop me." He set to work checking on fuel and oil. He loaded extra gas in the front cockpit, a huge tin of it. Another would crowd him badly in the pilot's cockpit in the rear, but he stowed it as carefully as he could. "The local sub-deputy," he added evenly, "has added to the thrill by having the two men put in one cage. He let his guests observe the progress of the madness the damned poison produces. And presently, as the madness grew, the two men fought. They were murder mad. The local sub-deputy gave his guests the thrill of watching maniacs battling to the death. He left early this morning with his party, and I imagine that everyone was suitably submissive to his demands for the future. There were four men and a woman left as caretakers here. I found the four men before the cage, baiting the poor devil who'd killed the other last night. That's why we heard the scream. When I came up with my rifle they stared at me, and ran. * * * * * "I got one then, and as a matter of mercy I put a bullet through the man who'd gone murder mad. The"--Bell sounded as if he were acutely nauseated--"the man he'd killed was still in the cage. My God!... Then I went looking for the other three men. Wasting time, no doubt, but I found them. I was angry. I got one, and the others ran away again. A little later the third man jumped me with a knife. He slit my sleeve. I killed him. Didn't find the fourth man." Bell moved to the front of the plane. "I'll see if she catches." He swung on the stick. It went over stiffly. Again, and again. With a bellow, the motor caught. Bell shouted in Paula's ear. "We'll get in. Use the warming-up period to taxi out. We want to get away as soon as we can."