Books like The Knowing Crystal by Kathleen Morgan

THE KEY Exiled to a harsh land of criminals and renegades, Teran had learned to survive by his wits, his skills as a warrior, and his raw strength. There was but one hope to escape. If he surrendered the key to his govern collar, he would be allowed to leave Carcer...as a slave of the most beautiful femina he's ever seen. THE QUEST On a seemingly hopeless search for the Knowing Crystal, sheltered Alia had desperate need of Teran's strength and knowledge of Carcer. Theoretically, she knew she could control the virile stranger by means of the collar about his neck, but still his rugged masculinity threatened her, sending thrills of fear and desire through her whenever they touched. For though Alia held the key, Teran held her heart, and in his powerful arms she would learn that love breaks all bonds. SEQUEL TO HEART'S SURRENDER

First publish date: March 1991