I loved this book. I am kicking myself for not reading Six a couple months ago when it came out. It's a pretty great story when I find myself not only rooting for but falling in love with a sociopath killer. There was the perfect amount of mystery and suspense that kept me guessing all the way until the end. The only thing I would have liked to see different would be for there to be an epilogue that shows what the future holds and to know what becomes of Five. Otherwise, I am happy with the story, the flow, the characters, the development, and the surprise twists. 5 stars.