I'm not usually one for books with pictures, but I think the illustrations were the crown jewel of this book. I found myself poring over each picture trying to find the patterns and subsequent clues. And the way Brett Helquist wove his clues into the pictures was phenomenal. The author also captured Petra and Calder very well - typical kids doing typical kid stuff. Very well done. It'll be a great re-read, and I'll be reading the sequel _The Wright 3_.