The scandalous true story of the duchess who became her beloved queen's blackmailer, published in a new and updated edition to coincide with the Oscar nominated film starring Olivia Colman, Emma Stone and Rachel Weisz.

Sarah 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.