Diamond was a great standalone read full of suspense. This book is Grace and Maxim's (Max) story and I really enjoyed both characters and the chemistry between them. At first, I thought Grace was too weak a character but things changed and I started to like her more. I enjoyed Max and Sergi from the very beginning, they made a great team. It was also great having the characters from the first book in this one. There were definitely a few twists and turns within the story that I didn't see coming, especially the one with Max's sister Elena. Dmitri thinks he has it all, and it might be that way for now, but the games are just beginning and I can't wait to see what happens next.