The world naved Mount Lookatthat was never meant for humans--it was shrouded in lethal mists. Life only existed on one plateau, unreachable except from space. But the disastrous decision to colonize the planet could not be reversed. So the settlers survived somehow under a ruthless dictatorship.
Then fate dealt the colonists a wild card named Matthew Keller, who had a talent that neither he nor anyone else knew about. At last the colonists had a glimmer of hope!
By the author of the Known Space novels, the Ringworld books, THE LONG ARM OF GIL HAMILTON,N-Space and other popular sf books.