'An incredible story crackling with royal passion, envy, ambition and betrayal ...A tour de force' Lucy WorsleySarah Churchill, Duchess of Marlborough, was as glamorous as she was controversial.Politically influential and independently powerful, she was an intimate, and then a blackmailer, of Queen Anne, accusing her of keeping lesbian favourites - including Sarah's own cousin Abigail Masham. Ophelia Field's masterly biography brings Sarah Churchill's own voice, passionate and intelligent, back to life.Here is an unforgettable portrait of a woman who cared intensely about how we would remember her - perfect for fans interested in the history behind the award-winning film starring Rachel Weisz with Olivia Colman and Emma Stone.