Hardback by Dan abnett

nothing is quite as it seems in the city of Queen Mab. Alizebeth Bequin can be called a pariah, spy, and Inquisitorial agent, all of these things and yet none of them. She is caught between Inquisitors Gregor Eisenhorn and Gideon Ravenor. Once former allies and now enemies who are playing a shadow game against a mysterious and deadly foe. She is coveted by the Archenemy and now pursued by the Inquisition. Bequin becomes entangled in a dark plot of which she knows not her role or purpose. Helped by her allies she must unravel the secrets of her life and past if she is to survive a coming battle.