A flame-haired, pipe-smoking detective extraordinaire, Bridie Devine is confronted with the most baffling puzzle yet: the kidnapping of Christabel Berwick, a peculiar child reputed to have supernatural powers. Winding her way through Victorian London, Bridie won't rest until she finds the girl, even if it means unearthing secrets about her past that she'd rather keep buried. Secrets abound in this foggy underworld, but luckily, her search is aided by an enchanting cast of characters, including a seven-foot-tall housemaid and a melancholic, tattoo-covered ghost.