This book follows the adventures of a teen who is a master thief and criminal who operates from the slums of a city called Ketterdam, and the heist he must pull off along with a gang of fellow criminals. The heist, however, has a catch, The seven criminals must save a scientist who has created a brilliant yet dangerous invention: a drug that enhances the powers of Grisha, who are people with extraordinary abilities. I loved this book because of the complexity of the heist, and the personalities of all of the gang. They all have their own special additions to the crew, and I loved the mix of characters. In addition, Leigh Bardugo's writing is impeccable and really keeps you wanting more. 5 stars for sure.