I read this in grade 2.
I remember trying to explain the plot line to my friend at school, but giving up and just saying that you have to read it.
I don't really remember much about the book (I'm older now), but I do remember that I thought the whole (minor spoiler alert) bomb part was really cool, and in general, that it was THE BEST BOOK EVER!!!!!!
I want my brother to read it (he's now in grade 2) but don't know whether it's actually appropriate for him???? Any body have a recommended age to read it?