"All of you! Raise your hands!"

They paid no attention to him. Instead of standing where they were, they began to move toward him. Wayne swore and, with a quick flip of his thumb, turned the beam down to low power and pulled the trigger three times in quick succession.

The three men fell as though they'd been pole-axed, knocked out by the low-power beam.

"The whole ship's gone crazy," he murmured softly, looking at the three men slumped together on the lab floor. "Stark, staring, raving nuts."

He took one step and someone jumped him from behind. The needle-beam pistol spun from his hand and slithered across the floor as Wayne fell under the impact of the heavy body. Apparently the whole Medical Corps was out to knock him down today.

He twisted rapidly as an arm encircled his neck, and rammed an elbow into the newcomer's midsection. Then he jerked his head back, smashing the back of his skull into his opponent's nose.

The hold around his neck weakened, and Wayne tore himself loose from the other's grasp. He jumped to his feet, but the other man was a long way from being unconscious. A stinging right smashed into Wayne's mouth, and he felt the taste of blood. Hastily he wiped the trickle away with the back of his hand.

With his nose pouring blood, Wayne's antagonist charged in. His eyes burned with the strange flame that had been gleaming in Boggs's face out on the desert in the valley. He ploughed into Wayne's stomach with a savage blow that rocked Wayne back.

He grunted and drove back with a flurry of blows. The other aimed a wild blow at Wayne's head; Wayne seized the wrist as the arm flew past his ear, and twisted, hard. The medic flipped through the air and came to rest against the wall with a brief crunching impact. He moaned and then lapsed into silence.