The whole book was spytastic! Bertie, his dog Little Roo, and his friends Eleanor and David have to solve a cipher notebook. They know who owned it, Violette. They have to figure her trap out, to stop a double agent spilling the biggest secret of all to the Nazis. It is an amazing mystery novel about the World War II London. I'd recommend it to any mystery novel bookworm. ;)

I like the book a lot and I like the characters.

It took a while to actually get the book, and the story was mostly predictable. Other than that, the characters and side stories were well thought out.

I really liked the decoding in this book.

This was a really great book with lots of suspense and I would recommend it to anyone who likes mystery novels.