Felice Arena writes well.  The book has captured the essence of Paris at the time, or how the author thinks it was, and the reader believes this.

The start is very slow. It took a quarter of the book before I was hooked.

I think there are too many incidental moments where the hero saves someone.

I don’t think the ending worked!  The killer doesn’t mind losing a really expensive gem! I don’t know why the hero was not disposed of, after he was in the hotel room of the killers!

Despite my criticisms I enjoyed the book.  I just think the editor needed to pick up a few things.

Recommended for Year 6 Boys and Girls.  More of a Boys book.