FROM THE HUGO WINNING NOVELIST Not long after the colonists landed on the uninhabited planet every human made artifact - ship communicators, tools—disappeared! Even their clothes! Here is an enthralling science alien planet puzzle from the man writer, critic and Nebula award winner Barry Maltzberg calls "One of the twelve most influential science fiction writers." When, Eden—the Earth colony eleven light years goes silent and fails to answer any communications from the mother planet, Earth's government goes into a panic. Has something tragic happened on a world already proven to have no intelligent, dangerous lifeforms? Or, are the colonists purposely disregarding the messages for some reason of their own? What could be the real explanation for the mysterious silence of a disciplined, scientific colony? To learn the answer, Earth's leaders turn to the Extrapolators- the honored group of men and women with an almost superhuman ability to see to the core of any problem. Soon the Es assign a probationary Extrapolator, Calvin Gray, to the hazardous journey to Eden, where he will win full admission into the ranks to the Extrapolators if he solves whatever problems he finds there. But, even with his special Extrapolator training, Grey is not prepared for the extent ort nature of the disaster that has struck the colony Eden—thrown back to an almost subhuman state of existence without houses, tools, equipment, or clothing. Here is a suspenseful science fiction from Mark Clifton, who, with his collaborator, Frank Riley, won the 1955 Hugo Award for best science fiction novel of the year for, They'd Rather Be Right. Galaxy magazine's editors called Clifton's work: "Full of excitement. Richly rewarding. Genuinely mature philosophy tinged with gentle irony."