Reviewed by Charles F. (age 8)
My favorite part of this book was when they found out that the ninjas were helping them. It was interesting because they thought that the ninjas were trying to get them. The book had a lot of information about ninjas in it, which was cool. I also liked it because it wasn't difficult to read. It was just right.
I recommend this book to any kid who likes adventure. If you like other Magic Tree House books, you'll like this one!