The Fire Sword

From the back cover of the Avon first edition: They seemed to have been expecting her, these gods and goddesses of an earlier time. They spoke to her in riddles. They told her of a rightful king now banished from his throne... of a primal struggle between the forces of Darkness and Light... of a sacred mission that only she could fulfill. Why was she summoned? Why was she cast back 800 years into the bygone world of medieval England? What role would she - a woman of the twentieth century - be required to play in this strange and mystical realm?