harmless. She was eying the long, curved claws on the webbed hands, and the tusklike, capable teeth bared by retracted lips. If she had been alone she would not have waited to face the amphibians. As it was, Quade lay unconscious beside her. Neither of the two was armed. The Zonals slipped closer. There was, Kathleen thought, unmistakable menace in their attitude. Growls rumbled from their throats. These weren’t Udell’s tame Zonals, that was certain. Hastily Kathleen looked about for a weapon, but all she could find was a good-sized lava chunk. Hefting this, she stood up, waiting. The Zonals, emerging from the water, closed in. Their growling was louder now. One amphibian was in the forefront; Kathleen could see him sinking lower as his furry legs bent and he tensed for a spring. She hurled the rock. The amphibian dodged easily. He sidled forward, and behind him came the others. A man’s voice shouted. There was the vicious crack of a whip. Again the harsh voice roared a command. The Zonals hesitated—and Kathleen looked back hastily to see a giant figure, clothed in rags, coming forward. Gray-shot red hair bristled wildly. His face was turned toward the Zonals, but the heavy broad shoulders spoke of enormous strength. The whip cracked. The man bellowed an order. Snarling, the Zonals drew back. Suddenly they broke and fled to the lake. The man stood waiting till they had submerged and then turned to Kathleen. He stood quietly facing her, the whip hanging lax. And something in his face made the girl shiver a little. The features were strong enough, even harshly handsome. But the glacial black eyes were—disturbing. There was no trace of expression in them. They stared like glazed jet marbles, cool and remote. “My name’s Milo Sherman,” the man said. He glanced at the unconscious Quade. As Kathleen opened her mouth, Sherman halted her with an upraised palm. “Better talk as we go. The Zonals are dangerous.” He laughed unpleasantly. “They’re afraid of me, but I take no chances. Come on.” He bent, hoisted Quade to his shoulders and started toward the glistening dome Kathleen had already glimpsed. “Now talk,” he commanded. Kathleen talked.