Why do I say mysterious? Because there is a lot more that IS Nikolai Volkov. I see him as a young man finding his way in the world and certainly the KINGS are his family and he is learning so much from them. Not only to be a man but also a better man. He and his father have come a long way and I'm pleased to see they are finding their way to a relationship. Nikolai is aware that he will have to step up after his father but being with the Kings means that he has a better compass than the one that was given to him by his Grandfather. He will hurt anyone who hurts him or his family but more important - he has learned that a man needs a good woman at his side and Leah is growing into a woman who will keep him from becoming anything like her father or his grandfather. I enjoyed this book, I loved how it was interwoven into past books.