With a cry of triumph, Margot Dennison leaped at him and bore him down to the floor with her weight. He was still too dazed from the blow on his head to offer any resistance when her strong hands tugged at his belt and withdrew the m.g. gun. She got up with it, backing away from him quickly toward the rear bulkhead as the ship seemed to go into a smooth glide which could be felt within it. Vardin stood alongside Ramsey, a hand to her mouth in horror. Ramsey got up slowly. "Stay where you are!" Margot cried, pointing the m.g. gun at him. "I'll kill you if I have to. I'll kill you, Ramsey, I mean it." Ramsey did not move. * * * * * "So you knew about my father," Margot challenged him. "Yeah. So what?" "And this shoal in hyper-space is a world, isn't it?" Ramsey nodded. "I think so." "O.K. Sit down at the controls, Ramsey. That's right. Don't try anything." Ramsey was seated in the pilot chair again. His head was still whirling but his strength had returned. He wondered if he could chance rushing her but told himself she meant what she said. She would kill him in cold blood if she had to. "Bring the _Enterprise_ down on that world, Ramsey." He sat there and stubbornly shook his head. "Margot, you'll be meddling with a power beyond human understanding." "Rubbish! You read my father's letter, didn't you? That fear's been implanted in your genes. It's part of the heredity of our people. It's rubbish. Bring the ship down." Still Ramsey did not move. Vardin looked from him to Margot Dennison and back again with horror in her eyes. "I'll count three," Margot said. "Then I'll shoot the Vegan girl. Do you understand?" Ramsey's face went white. "One," Margot said. Vardin stared at him beseechingly. Ramsey said: "All right, Margot. All right." Five minutes later, subjective time, the _Enterprise_ landed with a lurch. That they had reached a world in hyper-space there could be no doubt. But outside the portholes of the little freighter was only the murky grayness of the timeless hyper-space continuum. * * * * * "They've gone down, sir!" Ramar Chind cried. Garr Symm nodded. For the first time he was really nervous. He wondered about the Dennison letter. Could his fear be attributed to ancestral memory, as Dennison had indicated? Was it really baseless--this crawling, cold-fingered hand of fear on his spine? There was no physical barrier. The _Enterprise_ had established that fact. Then was there a barrier which Garr Symm, along with all humanoids, had somehow inherited? A barrier of stark terror, subjective and unfounded on fact? And beyond it--what? Power to chain the universe.... Think, Garr Symm told himself. You've got to be rational. You're a scientist. You've been trained as a scientist. This is their barrier, erected against you, against all humanoids, a million years ago. It isn't real. It's all in your mind.