What are the trademark signs that a murder victim has been killed by Stitch-face? Why does Stitch-face have a vendetta against Dr. Pyke and the Fraternity? Why does Stitch-face spare the life of Alaizabel, after tricking her and tying her to a chair? How does Carver determine that the Green Tack murders are not the work of Stitch-face?

What is the religious viewpoint of Devil-boy Jack? Why does Thaniel disagree with Devil-boy Jack? What, according to Dr. Pyke, caused wych-kin to appear in the world? Whose viewpoint is most compatible with the notion of faith, or with organized religion?

Why does much of London lie in ruins, over twenty years after being attacked by the Prussians? Why are the Old Quarter and the Crooked Lanes especially dangerous? What is the connection between the wych-kin and the Vernichtung? What do the airships symbolize in the...