In The Darkest Warrior by Gena Showalter, Puck — the prince of a desert realm — is possessed by the demon of Indifference. Because of this, he appears to be more monster than man, and anytime he feels emotion, he is punished. To gain his freedom, he must marry a certain human girl on the verge of immortality — then let her go. Except, affection and lust quickly grow from the union, leaving the fierce warrior reeling. Soon he will be forced to choose between desire for a life without the demon and desire for the woman he isn't sure he can live without.