The #1 New York Times bestselling author of William and Kate and The Day Diana Died takes a compulsively readable look into the relationships and rivalries of Queen Elizabeth, Camilla Parker Bowles, and Kate Middleton. One has been famous longer than anyone on the planet--a wily stateswoman and an enduring symbol of a fading institution. One is the great-granddaughter of a king's mistress and a celebrated homewrecker who survived a firestorm of scorn...