This book was so fun! I love puzzles and I loved the concept of the Puzzlemakers. Pippa seemed like a woman I would vibe with. Clayton Stumper was the main focus of the book and his quest for finding his birth parents. I enjoyed how the backstory of the Puzzlemakers came through in both flashback chapters from Pippa's point of view and present-day adventures from Clayton's point of view. One thing in particular that I appreciated in this book was that it felt like the characters were real and true people. For example, I wonder how much Pippa knew she was orchestrating and how much was chance in a way that makes me feel like Pippa is a real woman.