A quasi-mortal race of sorcerors whose extra-human powers at once blessed and threatened mankind. For centuries the Deryni had been outcast, their ranks decimated, their power destroyed. Only very gradually and grudgingly had those of Deryni blood once again been accepted with some degree of trust, until one, the Duke of Corwyn, Lord General Alaric Anthony Morgan, became chief advisor and friend to King Brion. And therefore to his son, Kelson.