"The Chronicles of the Deryni" is a series of fantasy novels written by Katherine Kurtz. Set in a fictional medieval world, the story revolves around the Deryni, a race of people with magical abilities. The series explores themes of power, religion, and the struggle for acceptance as the Deryni face prejudice from the non-magical population. The main plot follows characters like Prince Kelson and Deryni nobleman Duncan as they navigate political intrigue and personal challenges. The series combines elements of historical fiction and fantasy, creating a rich tapestry of conflict and character development that captivates readers.