Reviewed by Will C. (age 9)
I enjoyed the book because it made me think about what would happen next. My favorite part was when they were in a police car after a fire. The book reminds me of when I was getting ice cream and a house was on fire! There was one illustration that is awesome because it shows skulls with roman numerals carved on their fore heads! Dan is kind of like me because we are both adventurers.
I recommend this book to people who like mystery books and can read long chapter books. This book has 220 pages plus a top secret page at the end. Want to become a Cahill and help Dan and Amy find the 39 clues? Get the book to find out!