A spellbinding ghost story set in Victorian London.Greeted with enthusiastic praise, Sarah Waters's debut novel, Tipping the Velvet, was lauded as "amazing" and "delightful" (Salon.com), "buoyant and accomplished" (The New York Times Book Review), "glorious" (The Boston Globe), and "wonderful" (San Francisco Chronicle). Critics compared her to Jeannette Winterson, adding that "readers of all sexes and orientations should identify" with Waters's unforgettable nineteenth-century heroines. Now, Sarah Waters brilliantly returns with Affinity--a haunting ghost story and Guardian (London) bestseller that has left British reviewers "transfixed with horror and excitement" (Daily Mail, London).An upper-class woman recovering from a suicide attempt, Margaret Prior has begun visiting the women's ward of Millbank prison, London's grimmest jail, as part of her rehabilitative charity work.