A net of shadows begins to tighten around the Shadowhunters of the London Institute. Mortmain plans to use his Infernal Devices, an army of pitiless automatons, to destroy the them.
He needs only one last item to complete his plan: he needs Tessa Gray. But can a single girl, even one who can command the power of angels, face down an entire army?
A W. F. Howes audio production.