MS-33, he would look important and say nothing. Somehow it seemed vital that I find out what was going on before it was too late. On the third day there was a strange occurrence. My friend, Jon Rogeson had been taking pictures of the Dumps. Langley and his wife had withdrawn to one side and were talking in low tomes to one another. Quite thoughtlessly Jon turned the lens on them and clicked the shutter. Langley became rust-red throughout the vast expanse of his neck and face. “Here!” he said, “what are you doing?” “Nothing,” said Jon. “You took a picture of me,” snarled Langley. “Give me the plate at once.” Jon Rogeson got a bit red himself. He was not used to being ordered around. “I’ll be damned if I will,” he said. Langley growled something I couldn’t understand, and turned his back on us. The she who was called his wife looked startled and worried. Her eyes were beseeching as she looked at Jon. A message there, but I could not read it. Jon looked away. Langley started walking back to the half-track alone. He turned once and there was evil in his gaze as he looked at Jon. “You will lose your job for this impertinence,” he said with quiet savagery, and added, enigmatically, “not that there will be a job after this week anyway.” Builders may appear to act without reason, but there is always a motivation somewhere in their complex brains, if one can only find it, either in the seat of reason, or in the labyrinthine inhibitions from their childhood. I knew this, because I had studied them, and now there were certain notions that came into my brain which, even if I could not prove them, were no less interesting for that. The time had come to act. I could scarcely wait for darkness to come. There were things in my brain that appalled me, but I was now certain that I had been right. Something was about to happen to Phobos, to all of us here—I knew not what, but I must prevent it somehow. The I kept in the shadows of the shabby buildings of Argon City, and I found the window without effort. The place where I had spied upon the wife of Langley to my sorrow the other night. There was no one there; there was darkness within, but that did not deter me. Within the airdrome which covers Argon City the buildings are loosely