Following her perilous fall from a throne she'd scarcely owned to begin with, Mary, Queen of Scots, has fled to England, hoping her cousin, Queen Elizabeth, will grant her asylum. But now Mary has her sights on the English crown, and Elizabeth enlists her most trusted subjects to protect it. Justine Thornleigh is delighting in the thrill of Queen Elizabeth's visit to her family's estate when the festivities are cut short by Mary's arrival. To Justine's surprise, the Thornleighs appoint her to serve as a spy in Mary's court. But bearing the guise of a lady-in-waiting is not Justine's only secret. The weight of her task is doubled by fears of revealing to her fiancé that she is in truth the daughter of his family's greatest rival. Duty-bound, Justine must sacrifice love as she navigates a deadly labyrinth of betrayal that could lead to the end of Elizabeth's fledgling reign...