It mounted a hundred feet, sprayed out like a fountain column of water. From the ground, huge black figures tossed a balloon head into the column of light. The head rose, surged upward, until at the top it hung in the light spray, balancing itself like a ball held at the top of a jet of water. It was all very swift, a moment or two while the girls stared at the glowing grid. The head was nearly level with the ledge. In the green light Altho’s figure showed plainly; he was standing at the ledge, firing his red rings of flame. But they were futile now. They floated slowly, and from below, some hidden marksman was catching each of them with an upflung pencil point of black light, a narrow beam, so dead black that it showed clearly in the night. It caught the red fire rings; its rays exploded them harmlessly in the air. The grid went dark; the second lens disk had burned out. But the platform itself now swept over the valley. The reality of the image scene was spread beneath the girls. Sonya saw the ledge was large enough to land upon; she guided the birds toward it. She raised the electronic needle projector, fired it with a futile aim and then cast it away. There was no time for her to attempt to use it further. Her birds were swooping for the ledge, and they needed her guidance. A moment, and they would be there. But too late! The head in the fountain of green light held something in his hands. A hum rose over the valley. Altho, standing on the ledge, suddenly flung up his arms. His weapon fell from him. He toppled, seemed trying to draw himself backward. But could not. And then, forward from the ledge his struggling figure floated into the air. On the ledge, Ren and Jim were frantically clinging to avoid being drawn after him. The hum rose to a shrill whine. In what seemed a whirlpool of air, or the levitation of an invisible magnetic stream, Altho was drawn to the head on the supporting green light beam. The green light slowly diminished. The head, with arms holding Altho’s unconscious body, was lowered to the ground. A voice down there shouted hurried commands. The lights all went out sharply. In the starlight, Altho’s body was surrounded by dark surging figures, and dragged away. The platform swooped to the ledge, landed with a thump. “Jim! Jim! Are you all right?” It was Dolores’s anxious voice. But Sonya was cold, shuddering. All her hopes were vanished. She knew that they could not go down into the dark valley, with all those armed figures entrenched in the caves. Altho was lost to her. Jim and Ren rushed to the platform. There was a moment of confused greeting. Jim never knew how it quite happened, but from the other ledge, ten feet above them, a head like Talon suddenly leaped down. It flashed to Jim that the head must all this time have been laboriously climbing in the darkness. Or perhaps had followed some underground passage to the cave up there.