It's a well- written gripping read, with a decent main character tha actually appears to kill people and be quite blase about it.
The setting is interesting, but could stand with a little more detail. For example, I understood that magic was responsible for a lot of the destruction in the land, but there was little explanation given to how the Queen put a stop to it.
Additionally, the relationships seemed a little forced. The main love interest is a girl that Sal robbed in the first chapter of the book, a standard, 'wow you weren't mean to me as you robbed me, so you must be my soulmate' job, and the the other girl is a maid who wants Sal to succeed for reasons of her own. To be fair, neither relationship is terrible, it just feels a little cliche, because while Sal is a fascinating character to read, there is nothing that would inspire this kind of reaction.
I did enjoy this book, and will read the second when it's released.