The book is set in a different place than the first law, but a lot of the characters from the first law series are there and it is very much connected. It follows a mercenary woman and her quest for revenge. It is filled with betrayals.
This is the introductory. book in the first law series/world. It is the beginning of the adventure of the main heroes of the first law trilogy. Most of it pertains to mundane tasks and world-building.
Last book (for now) in the first law series. It is a good and interesting fantasy book in that it emulates the French Revolution. I quite liked it and how it portrays a turbulent age where power dictates the fate of life.