Sinopse
To save her only son from the ravages of consumption, the great-grandmistress of the Telegraphers Guild, Alice Meynell, has made a bargain with her former lover-a changeling in the land of Einfell-to do whatever is necessary to cure him. Once healthy, her son is torn between his duty to lead the guild and his love for a servant girl. But Alice has chosen her sons destiny. And shell see him achieve it even if it means bringing the Age of Light to an end.