High Deryni is a historical fantasy novel by American-born author Katherine Kurtz. It was first published by Ballantine Books as the sixty-first volume of the celebrated Ballantine Adult Fantasy series in September 1973 and has been reprinted a number of times since. A revised and updated edition of the novel was released in 2007 by Ace Books. High Deryni was the third of Kurtz' Deryni novels to be published, and the final book in the Chronicles of the Deryni Trilogy. The next Deryni book to be published was Camber of Culdi, which details events that occur two centuries before High Deryni. However, the internal literary chronology of events in the Deryni series is continued in The Bishop's Heir. Source: Wikipedia (en)