The Fear - mysterious, unstoppable, this deadly plague is slowly wiping out humanity. And only one world seems to offer hope of sanctuary - Ree'hdworld, home of the only other intelligent beings in the universe. But Ree'hdworld is not as safe as it seems. For something has been happening to the natives - both the friendly Ree'hd and their more primitive kinsmen, the Rundil. And only three people stand any chance of discovering and surviving the danger that the humans of Ree'hdworld will soon face: Kristina, an Earthwoman who is slowly "going Ree'hd"; Maguire, a blind man who should have died centuries ago and who, living, has seen all the secrets of the universe; and Zeitman, a brilliant scientist who holds the key to salvation of Ree'hdworld in his mind - in only he can discover it in time....