From the author of Ophelia and the Marvelous Boy comes the story of a friendship between two girls set in Victorian England, with magical machines, wizards, witches, a mysterious underworld, and a race against time. Annabel Grey is primed for a proper life as a young lady in Victorian England. But when her mother suddenly disappears, she's put in the care of two eccentric aunts who thrust her into a decidedly un-ladylike life,...