Heartless — Gail Carriger

Lady Alexia Maccon, soulless, is at it again, only this time the trouble is not her fault. When a mad ghost threatens the queen, Alexia is on the case, following a trail that leads her deep into her husband's past. Top that off with a sister who has joined the suffragette movement (shocking!), Madame Lefoux's latest mechanical invention, and a plague of zombie porcupines and Alexia barely has time to remember she happens to be eight months pregnant.

Will Alexia manage to determine who is trying to kill Queen Victoria before it is too late? Is it the vampires again or is there a traitor lurking about in wolf's clothing? And what, exactly, has taken up residence in Lord Akeldama's second best closet?