Deryn Lake is the pen name of British historical novelist Dinah Lampitt, a writer of historical mysteries and romances whose fiction ranges across Georgian and earlier English history. Born in Essex, she began writing from an early age and later established herself with large-scale historical novels before moving into detective fiction. She has lived for many years in Sussex, close to Hastings and the landscape of the Norman Conquest. Her work is marked by a strong interest in period detail, social hierarchy, medicine, crime and the contrast between respectable society and the less visible worlds beneath it.
Lake is best known for the long-running John Rawlings series, beginning with Death in the Dark Walk. Set principally in eighteenth-century London, the novels follow a young apothecary who becomes an unofficial investigator for the real Bow Street magistrate Sir John Fielding. The sequence eventually grew to eighteen primary works and takes Rawlings from Vauxhall Gardens, Drury Lane and Apothecaries’ Hall to Romney Marsh, Devon and other parts of Georgian Britain, combining murder investigations with medicine, politics and urban life. Lake also wrote historical romances such as The King’s Women, Pour the Dark Wine and the Sutton Place trilogy, demonstrating a broader interest in dynastic politics and relationships beyond the crime genre.