"I thought I had seen something. Heard something. I thought I--" He stopped. "Go on." "We were sitting at the table. Playing cards. You two were in the other room. It was silent. I thought I heard him--_whirr_." There was silence. "Do you believe that?" Tasso said to Hendricks. "Yes. I believe what he says." "I don't. I think he killed Rudi for a good purpose." Tasso touched the rifle, resting in the corner of the room. "Major--" "No." Hendricks shook his head. "Let's stop it right now. One is enough. We're afraid, the way he was. If we kill him we'll be doing what he did to Rudi." Klaus looked gratefully up at him. "Thanks. I was afraid. You understand, don't you? Now she's afraid, the way I was. She wants to kill me." "No more killing." Hendricks moved toward the end of the ladder. "I'm going above and try the transmitter once more. If I can't get them we're moving back toward my lines tomorrow morning." Klaus rose quickly. "I'll come up with you and give you a hand." * * * * * The night air was cold. The earth was cooling off. Klaus took a deep breath, filling his lungs. He and Hendricks stepped onto the ground, out of the tunnel. Klaus planted his feet wide apart, the rifle up, watching and listening. Hendricks crouched by the tunnel mouth, tuning the small transmitter. "Any luck?" Klaus asked presently. "Not yet." "Keep trying. Tell them what happened." Hendricks kept trying. Without success. Finally he lowered the antenna. "It's useless. They can't hear me. Or they hear me and won't answer. Or--" "Or they don't exist." "I'll try once more." Hendricks raised the antenna. "Scott, can you hear me? Come in!" He listened. There was only static. Then, still very faintly-- "This is Scott." His fingers tightened. "Scott! Is it you?" "This is Scott." Klaus squatted down. "Is it your command?" "Scott, listen. Do you understand? About them, the claws. Did you get my message? Did you hear me?" "Yes." Faintly. Almost inaudible. He could hardly make out the word. "You got my message? Is everything all right at the bunker? None of them have got in?" "Everything is all right." "Have they tried to get in?" The voice was weaker. "No." Hendricks turned to Klaus. "They're all right." "Have they been attacked?" "No." Hendricks pressed the phone tighter to his ear. "Scott, I can hardly hear you. Have you notified the Moon Base? Do they know? Are they alerted?" No answer. "Scott! Can you hear me?" Silence. Hendricks relaxed, sagging. "Faded out. Must be radiation pools." * * * * * Hendricks and Klaus looked at each other. Neither of them said anything. After a time Klaus said, "Did it sound like any of your men? Could you identify the voice?" "It was too faint." "You couldn't be certain?" "No." "Then it could have been--" "I don't know. Now I'm not sure. Let's go back down and get the lid closed."