I loved the book! It's an amazing book of adventure, mystery and code-breaking. Personally, I found that the book had a lot of action and a big plot twist. Overall experience: I loved it! Great book

I don't like it very much because it was scary😐

it was nooooooooooooooooooo its zero stars

It was interesting because the kid became a spy learning codes with his friends and LR.

The book is pretty good, but it's not like it's the best book that I ever read in my whole life.