Silence. Stillness. Birds sang in the distance. But nothing happened. Absolutely nothing. After a long time Lockley said suddenly, "I've got an idea. It fits into that broadcast. I have to take a chance to find out. If anything happens to me, don't try to help me!" He'd smelled the foul odor at least fifteen minutes before, and had dragged Jill back, and there had been no other sign of monsters or not-monsters upon the earth. Now he crouched down and crawled among the bushes. He came to the place where he'd smelled the ghastly smell before. He smelled it again. He drew back. It became fainter, though it remained disgusting. He moved forward, stopped, moved back. He went sideways, very, very carefully, extending his hand before him. He stopped abruptly. He came back, his face angry. "We were lucky we couldn't use the car," he said when he was near Jill again. "We'd have been killed or worse." She waited, her eyes frightened. "The thing that paralyzes men and animals," he told her, "is a projected beam of some sort. We almost ran into it. It's probably akin to radar. I thought they'd put watchers on the highways. They did better. They project this beam. When it blocks a highway, anybody who comes along that highway runs into it. His eyes become blinded by fantastic colored lights, and he hears unbearable noises and feels anguish and they smell what we smelled just now. And he's paralyzed. Such a beam was turned on me yesterday and I was captured. A beam like that on the highway at the lake paralyzed three men who were carried away, and later two others whose car ditched and who stayed paralyzed until the beam was turned off." "But we only smelled something horrible!" protested Jill. "You did. I rushed you away. I'd smelled it before. But I went back. And I smelled it, and I crawled forward a little way and I began to see flashes of light and to hear noises and my skin tingled. I pushed my hand ahead of me--and it became paralyzed. Until I pulled it back." Then he said, "Come on." "What will we do?" "We change our line of march. If we drove into it or walked into it we'd be paralyzed. It's a tight beam, but there's just a little scatter. Just a little. You might say it leaks at its edges. We'll try to follow alongside until it thins out to nothing or we get where we want to go. Unless," he added, "they've got another beam that crosses it. Then we'll be trapped." He led the way onward. They covered four miles of very bad going before Jill showed signs of distress and Lockley halted beside a small, rushing stream. He saw fish in the clear water and tried to improvise a way to catch them. He failed. He said gloomily, "It wouldn't do to catch fish here anyhow. A fire to cook them would show smoke by day and might be seen at night. And whatever's at the Lake might send a terror beam. We'll leave here when you're rested."