Headquarters House was a combination office, communications center, and living quarters for the staff of Explorations Unlimited. Sleeping rooms, resembling those of Bachelor Officers’ Quarters on an army post, filled one ell of the building. Into one of these went Biff. Moments after his head hit the pillow, he was in a deep sleep, in spite of the murky heat that was unrelieved by the lateness of the night.

Around five o’clock in the morning, as dawn was transforming the night-blackened jungle into a greenish maze, Biff was awakened by the sound of running feet passing his door. These were followed by others. The whole building seemed to spring to life. Something was up.

Biff jumped out of bed. First he went to the window. Looking out, he saw a tremendous animal faintly outlined in the morning mists not more than thirty feet away. Just as he was about to call out, he saw the floppy ears and the swaying trunk of the animal raise toward the sky, and let go with a trumpeting that rattled the windows. Biff had to smile at himself. What was an elephant doing wandering around loose at that time of the morning? “Some difference from home,” he thought.

Biff dressed quickly. He hurried down the hallway toward the center of Headquarters House. Sounds of activity came from the communications center. He paused in the doorway. Jack Hudson and two other men were bunched together around a short-wave receiver. Static crackled throughout the room. One of the men picked up a hand microphone.

“This is H H One, calling. This is Happy Harry One calling X 0369. Come in X 0369. Repeat: Come in X 0369. We were beginning to read you. Acknowledge. Do you read us?”

His answer was a roar of static.

Jack Hudson shook his head. His concern and the intense looks on the faces of the other men told Biff they were troubled.

“Was it Keene, Mike?” Jack demanded. “Was it Charlie?”

Biff heard Jack’s question, and he felt a sudden pang of fear.

The radio operator, Mike Dawson, shook his head. “I can’t say for sure. I think it must have been. But the voice was so faint. And the static—”