In this "miraculous and thrilling" (Diane Setterfield, #1 New York Times bestselling author) mystery for fans of The Essex Serpent and The Book of Speculation, Victorian London comes to life as an intrepid female sleuth wades through a murky world of collectors and criminals to recover a remarkable child. Bridie Devine?flame-haired, pipe-smoking detective extraordinaire?is confronted with the most baffling puzzle yet: the kidnapping of Christabel Berwick, secret daughter of Sir Edmund Athelstan Berwick, and a peculiar child whose reputed supernatural powers have captured the unwanted attention of collectors in this age of discovery. Winding her way through the sooty streets of Victorian London, Bridie won't rest until she finds the young girl, even if it means unearthing secrets about her past that she'd rather keep buried.