This is the story of King Kelson Haldane who assumes the throne at age 14, after witnessing his father's murder. Treachery surrounds the young king, as a Deryni sorceress challenges him for the throne. His only help is Morgan, a half Deryni chief advisor, who must help the boy assume his own sorcerer's powers. While the hostile regency council, led by the Church, which has presecuted the Deryni for 200 years, is trying to destroy Morgan. This is where the Deryni universe begins. It is Miss Kurtz's first novel in the series and it shows. This book is written more toward the adolesence than the adult reader. But from an embryonic start, the Deryni universe blossoms wonderfully in subsequent novels, as Miss Kurtz's writing skills improve dramatically.
Read this book for that very reason, it is just the beginning and things do get a lot better.