"When David and Jennifer, recently married, set out on a walking tour in Cornwall, they had no idea that they would end up traveling in time instead of space. But they stumbled on the mansion of a millionaire scientist, who issued them with a staggering invitation. He had perfected a technique of slowing down the physiological function of any animal organism to an almost infinite degree. Would David and Jennifer care to join him on a trip into the tenth millenium--a journey of eight thousand years which would only take them forty days of bodily living to accomplish? They accept--with fascinating consequences"--P. .