Even blood, sweat and gears won't save them now. Edwin McGillicuddy is a former vampire Enforcer, once the right-hand man to the most powerful Vampire Lord on Earth. Eliza Book is a Poppet, a vampire's plaything, and she's on the run for her life and soul. In an alternate New York City run entirely on steam power and high technology, vampires and shapeshifters are struggling for civil rights, and Edwin and Eliza are about to find themselves in the middle of a firestorm. Enter Lord Foxley, Edwin's ex-master and maker. Fearful there is a murderer on the loose killing high-ranking Vampire Lords and wiping out whole Vampire Courts, he manipulates the couple into following the trail of a brilliant assassin. But it isn't long before the assassin discovers a new target in Edwin and Eliza!