There is a theme of suspense throughout the book, and I think it would hold any child's interest, likely spurring them to ask a multitude of questions about WWII. There is also bits of comedy that lighten things up. All in all, it's a very inspiring book about helping others because not only is it the right thing to do, it is what God wants us to do. I think this would be a great introduction and/or companion to teaching young children history. I even learned a few interesting details I had never heard when we studied WWII pretty extensively in school. The suggested grade level is 2.2 and 7+ years old and I think that is a pretty accurate target age, but use discretion as each child is different.
There is a little puzzle for kids to solve in the back of the book & then they're given a "secret word" that they can enter online, and it states they will "get a prize" for entering the correct word. Unfortunately, when I tried to do this, it told me I entered the wrong word. I double and triple checked the puzzle, then tried entering it in all lower case, all upper case & then with only the first letter capitalized. Nope. Didn't work. Bummer because I can't tell you if/what the prize was. Bigger bummer for the kids who go on the site and are really disappointed or confused. I emailed the site and I'm sure they'll resolve the issue quickly.
In the spirit of full disclosure, I received a free copy of this book from Tyndale Blog Newtork for the purpose of reviewing.