A novel of Guenevere, wife of King Arthur, portraying her as the power behind the throne. The book chronicles their fiery relationship, their efforts at keeping Britain united and their respective extra-marital affairs, he with his half-sister, Morgan, she with Lancelot. By the author of I, Elizabeth.

A terrible darkness falls over Camelot and in the midst of the chaos appears a new knight, Sir Galahad. Barely fourteen, he may hold the key to the mystery of the stolen Hallows, which the Christians believe to be the Holy Grail. this completes the final cycle of the Quest for the Holy Grail and the fall of Camelot.