A queen's life hangs in the balance, and her siblings’ decisions—about what to do, and most of all, who to love—could change the course of history. Romance. Duty. Power...only one can triumph in this stunning conclusion to the New York Times bestselling American Royals series. America's royal family is in shambles. Queen Beatrice is in a coma and Princess Samantha has gone missing—from the look of things, she ran away with her boyfriend,...