Isabella and Beatrice d'Este are as different as night and day Wordly and ambitious, Isabella's beauty and intellect are legendary across the courts of Europe, while her younger sister, a tomboy, prefers horses and the hunt When Isabella is betrothed to the Marquis of Mantua, all her ambitions seem to come true - until Beatrice marries Ludovico, the powerful Duke of Milan Suddenly, Isabella finds herself drawn to her sister's husband, a man as charismatic as he is dangerous