Patient, perfect, and used to being first, Marguerite becomes Queen of France. But Louis IX is a religious zealot who denies himself the love and companionship his wife craves. Can she borrow enough of her sister's boldness to grasp her chance for happiness in a forbidden love? Passionate, strong-willed, and stubborn, Eleanor becomes Queen of England. Henry III is a good man, but not a good king. Can Eleanor stop competing with her sister and value what she has, or will she let it slip away? The Sister Queens is historical fiction at its most compelling, and is an unforgettable first novel.