Travis' head jerked. It had come as suddenly as a blow between his eyes--to half stun him. What ... what was it? Not any physical impact--no, something which was dazing but still immaterial. He braced his whole body, awaiting its return, trying frantically to understand what had happened in that instant of vertigo and seeming disembodiment. Never had he experienced anything like it--or had he? Two years or more ago when he had gone through the time transfer to enter the Arizona of the Folsom Men some ten thousand years earlier--that moment of transfer had been something like this, a sensation of being awry in space and time with no stable footing to be found. Yet he was lying here on very tangible rock and soil, and nothing about him in the shadow-hung landscape of Topaz had changed in the slightest. But that blow had left behind it a quivering residue of panic buried far inside him, a tender spot like an open wound. Travis drew a deep breath which was almost a sob, levered himself up on one elbow to stare intently down into the enemy camp. Was this some attack from the other's unknown weapon? Suddenly he was not at all sure what might happen when the Apaches made that dawn rush. Jil-Lee was in station on his right. Travis must compare notes with him to be sure that this was not indeed a trap. Better to retreat now than to be taken like fish in a net. He crept out of his place, gave the chittering signal call of the fluff-ball, and heard Jil-Lee's answer in a cleverly mimicked trill of a night insect. "Did you feel something just now--in your head?" Travis found it difficult to put that sensation into words. "Not so. But you did?" He had--of course, he had! The remains of it were still in him, that point of panic. "Yes." "The machine?" "I don't know." Travis' confusion grew. It might be that he alone of the party had been struck. If so, he could be a danger to his own kind. "This is not good. I think we had better hold council, away from here." Jil-Lee's whisper was the merest ghost of sound. He chirped again to be answered from Tsoay upslope, who passed on the signal. The first moon was high in the sky as the Apaches gathered together. Again Travis asked his question: Had any of the others felt that odd blow? He was met by negatives. But Nolan had the final word: "This is not good," he echoed Jil-Lee's comment. "If it was the Red machine at work, then we may all be swept into his net along with those he seeks. Perhaps the longer one remains close to that thing, the more influence it gains over him. We shall stay here until dawn. If the enemy would reach the place they seek, then they must pass below us, for that is the easiest road. Burdened with his machine, that Red has ever taken the easiest way. So, we shall see if he also has a defense against these when they come without warning." He touched the arrows in his quiver.