The Fortune Hunter by Daisy Goodwin

In 1875, heiress Charlotte Baird is not looking for love when she meets Captain Bay Middleton. She is more interested in photography than being married off. However, Bay takes an interest in Charlotte's hobby and seems to like her for more than her substantial fortune. She reciprocates his feelings, but knows that her brother Fred will disapprove of Bay as her choice for a husband. When married Sisi, Empress of Austria, asks Bay to assist her in various hunts in the English countryside, he accepts and is swayed by her beauty and the same passion he shares for riding. In this triangle of love and possible scandal, someone is bound to be left hurt and unhappy. Author Daisy Goodwin spins an engaging fictional tale about the real-life Sisi that is hard to put down.