The King's Daughter — Barbara Kyle

Upon the death of her father, Henry VIII, Queen Mary assumes the throne after a long exile. Her first order of business is to wed the devout Prince Philip of Spain, creating a powerful alliance that will transform Mary's fanatical dream of ridding England of Protestantism into terrifying reality. And so begins the reign of Bloody Mary...
Even as she plans for her own nuptials, Isabel Thornleigh is helping to lay the groundwork to overthrow Mary and bring Elizabeth to power. But none of the secrets Isabel has discovered compares to the truths hidden in her own family. With her beloved father imprisoned by Queen Mary, only Carlos Valverde--a Spanish soldier of fortune--can help Isabel. Now with England's future at stake, Isabel risks all to change the course of history...

Filled with lavish period detail and fascinating characters, The King's Daughter mesmerizes readers as it takes them into a riveting world of riches, pageantry, passion, and danger...