"It came to Earth very quietly one evening from an alien planet. It was a mind, a free mind separated from any brain. A galactic mind that had taken one million years of superscience to create. <P> Dr. Thule Hillory of Serendipity Labs was the only Earthman able to feel the alien presence. Through his PSI experiments, he had already discovered the phenomenon of Psychokinesis. <P> But now time was running out, and Hillory must work night and day if there's to be any chance to halt the invisible menace!"
