Wave without a Shore

Freedom was an isolated planet, off the spaceways track and rarely visited by commercial spacers. It wasn't that Freedom was inhospitable as planets go. The problem was that outsiders -- tourists and traders -- claimed the streets were crowded with mysterious characters in blue robes, and with members of an alien species. Native-born humans, however, said that was not the case. There were no such blue-robes and no aliens. Such was the viewpoint of both Herrin the artist and Waden the autocrat -- until a crisis of planetary identity forced a life-and-death confrontation between the question of reality and the reality of the question . . .