What I liked: I really liked how Jeffery Salane wrote it so that M had no idea that it was a school of criminals, yet she was better than most of the people at the school. I also liked how some characters in the book are not who you think they are, in drastic ways.
What I didn't like: I didn't like how some of the minor characters were developed.
We only got told what they look like and what they are good at, but not much other information such as their personality. Also, some things were not depicted really good.