The Shadow of the Torturer (The Book of the New Sun, Vol. 1)

Severian is a torturer, born to the guild and with an exceptionally promising career ahead of him . . . until he falls in love with one of his victims, a beautiful young noblewoman. Her excruciations are delayed for some months and, out of love, Severian helps her commit suicide and escape her fate. For a torturer, there is no more unforgivable act. In punishment he is exiled from the guild and his home city to the distant metropolis of Thrax with little more than Terminus Est, a fabled sword, to his name. Along the way he has to learn to survive in a wider world without the guild - a world in which he has already made both allies and enemies. And a strange gem is about to fall into his possession, which will only make his enemies pursue him with ever-more determination . . . The Shadow of the Torturer is the first volume in the four-volume series, The Book of the New Sun. It is the tale of young Severian, an apprentice in the Guild of Torturers on the world called Urth, exiled for committing the ultimate sin of his profession -- showing mercy toward his victim -- and follows subsequent journey out of his home city of Nessus.