I've just had word that the jacket art is locked, so here it is. The book will be published in hardcover on February 7th by Crown.
The story features ex-Pinkerton man Sebastian Becker, last seen arriving in England with his family at the end of The Kingdom of Bones. He installs his family in cheap rooms in Southwark and takes a gig as Special Investigator to Sir James Crichton Browne, the Lord Chancellor's Visitor in Lunacy. Becker's job is to pursue the criminally insane whose wealth or position protects them from the law.
I'll be mentioning this again. You can count on it.