Un segreto antico sussurra nel fragore del tuono, un lampo squarcia il cielo e Udolpho si rivela a Emily come un gigante pietrificato.
È il 1584 quando, orfana, Emily St. Aubert raggiunge la zia Madame un rifugio che presto si rivela prigione. Il matrimonio di lei con il conte Montoni la trascina in un dedalo di torri aguzze, stanze invase dall'ombra e corridoi in cui ogni eco vibra come un presagio. Quando cala la notte, note lontane e sussurri intrappolati nelle mura guidano Emily fino a lettere ingiallite, dietro a tende consumate dal tempo. Passaggi nascosti emergono al suo tocco, impronte sfocate la invitano a seguire indizi che l'occhio distratto non coglierebbe. Il conte Montoni la fissa con gelida determinazione, desideroso di soffocare ogni barlume di speranza. Eppure la paura stessa accende in Emily un coraggio tra un enigma e l'altro, ricompone i frammenti di un complotto così fitto da sfidare ogni autorità. Pubblicato nel 1794, I misteri di Udolpho è il capolavoro che ha definito il romanzo gotico. Ann Radcliffe plasma paesaggi ostili e tensioni sottili, trasforma l'angoscia in un'esperienza viva, psicologica. Solo penetrando nel cuore del castello — prigione del corpo e della mente — Emily potrà liberarsi, dimostrando che non esiste catena più stretta di quella forgiata dal terrore.
William Radcliffe, her father and a haberdasher, moved the family to Bath to manage a china shop in 1772. Radcliffe occasionally lived with her uncle, Thomas Bentley, in Chelsea in partnership with a fellow Unitarian, Josiah Wedgwood. Although mixing in some distinguished circles, Radcliffe seemingly made little impression in this society, and Wedgwood described her as "Bentley's shy niece."
In 1787, she married William Radcliffe, the Oxford graduate and journalist. He often came home late, and to occupy her time, she began to write and read her work when he returned. They enjoyed a childless but seemingly happy marriage. Radcliffe called him her "nearest relative and friend". The money she earned from her novels later allowed them to travel together, along with their dog, Chance.
She published The Castles of Athlin and Dunbayne in 1789. It set the tone for the majority of her work, which tended to involve innocent, but heroic young women who find themselves in gloomy, mysterious castles ruled by even more mysterious barons with dark pasts.
Her works were extremely popular among the upper class and the growing middle class, especially among young women. Her works included A Sicilian Romance (1790), The Romance of the Forest (1791), The Mysteries of Udolpho (1794), and The Italian (1796). She published a travelogue, A Journey Through Holland and the Western Frontier of Germany in 1795.
The success of The Romance of the Forest established Radcliffe as the leading exponent of the historical Gothic romance. Her later novels met with even greater attention, and produced many imitators, and famously, Jane Austen's burlesque of The Mysteries of Udolpho in Northanger Abbey, as well as influencing the works of Sir Walter Scott.
Stylistically, Radcliffe was noted for her vivid descriptions of exotic and sinister locales, though in reality the author had rarely or never visited the actual locations. Shy by nature, she did not encourage her fame and abandoned literature as a pursuit.
She died on February 7, 1823 and was buried in Saint George's Church, Hanover Square, London.