Can Elizabeth assist a strikingly handsome doctor in solving the mystery of a gruesome murder?Not a day has passed since the affair of the Turquoise Spider, and Elizabeth Hunter-Payne and members of her EHP Investigation Bureau have already launched into another do or die case, this time involving murder, deceit and airships.What is Torbernite, and why is it so important? What has it to do with airships? Follow the indefatigable investigator as she tracks down the clues in her own impulsive style while falling for the charms of two virile lovers, all set against the backdrop of a dangerous steam-driven world.