"Isabella is barely a teenager when she becomes an unwitting pawn in a plot to dethrone her halfbrother, King Enrique. Suspected of treason and held captive, she treads a perilous path, torn between loyalties, until at age seventeen she suddenly finds herself heiress of Castile, the largest kingdom in Spain. Plunged into a deadly conflict to secure her crown, she is determined to wed the one man she loves yet who is forbidden to her--Fernando, prince...