It came, and it staggered him back, physically. He recoiled several steps in sheer horror at the intensity of the lust-to-kill of the red images projected at him. For a moment that seemed eternity he had to struggle against the impact of that hatred, fighting to clear his mind of it and drive out the alien thoughts to which he had given admittance. He wanted to retch.His mind cleared slowly. He was breathing hard and he felt weaker, but he could think.He stood studying the Roller. It had been motionless during the mental duel it had so nearly won. Now it rolled a few feet to one side, to the nearest of the blue bushes. Three tentacles whipped out of their grooves and began to investigate...