Elizabeth Mountbatten never expected her father to die so suddenly, so young, leaving her with a throne to fill and a global institution to govern. Crowned at twenty-five, she was already a wife and mother as she began her journey towards becoming a queen. As Britain lifted itself out of the shadow of war, the new monarch faced her own challenges. Her mother doubted her marriage; her uncle-in-exile derided her abilities; her husband resented the sacrifice...