A really quick read, barely 200 pages, but exciting, full of airship chases and battle scenes. I was glad to see Priest address the racism of the society she's writing -- not just glance at it, but really pay attention to how it shapes the characters' options and their relations to each other. And I think I am in the minority in having disliked the rotters in Boneshaker pretty thoroughly, so I was happy to see that this one's threats and troubles remained thoroughly in the realm of the scientifically explicable.