The Prince in Waiting — John Christopher

Luke lives in a society whose finest art is fighting. Since a natural disaster years before, there have been no machines, people must rely on their bodies and wits. All believe in the Spirits -- strange, otherworldly beings whose messages are relayed through hold Seers.

Winchester is rigidly divided, and Luke knows his place. But one day, a Seer stops him in the street with a mysterious message. Do the Spirits have plans for him? And what will Luke do then?