Deryni Rising is a historical fantasy novel by American-born author Katherine Kurtz. It was first published by Ballantine Books as the nineteenth volume of the Ballantine Adult Fantasy series in August 1970, and was reprinted at least ten times over the next three decades. In 2004, the author released a revised and updated edition of the novel that was published by Ace Books. Deryni Rising was the first of Kurtz' Deryni novels to be published, though some of her later works served as prequels, detailing events that occurred before the time period of Deryni Rising. As a result, the storyline of the Childe Morgan Trilogy immediately precedes Deryni Rising, despite the fact that it was published over thirty years after the first novel. Source: Wikipedia (en)