Phil Holmes looked square into his eyes. He bluffed.

"You couldn't desert us, Quade. You haven't the guts. You haven't the guts."

His face and eyes burned with the contempt that was in his words. It cut Quade to the raw. But he could not avoid Phil's eyes. He stared at them for a full moment, trembling slightly. Slowly, by inches, he started to back toward the sphere; then suddenly he ran for it with all his might, Holmes after him. Quade got to it first, and inside, as he yanked in the searchlight and slammed and locked the door, he yelled:

"You'll see, you damned pup! You'll see!" And there was the smothered sound of half-maniacal laughter....

Phil threw all his weight against the metal door, but it was hopeless and he knew it. He had gathered himself for another rush when he heard Guinness yell:

"Back, Phil—back! He'll turn on the side disintegrators!"

Mad with rage as the young man was, he at once saw the danger and leaped away—only to almost fall over the professor's prone body. With hurrying, trembling fingers he untied the pair's bonds, and they struggled to their feet, cramped and stiff. Then it was Phil who warned them.

"Back as far as you can! Hurry!" He grabbed Sue's hand and plunged toward the uncertain protection of a huge rock far in the rear. At once he made them lie flat on the ground.