This book is amazing. I have always enjoyed reading books based around secret agents in the world wars, this book is different from other books that I have seen though.
I really enjoyed that it was set in Vienna, it gave a different viewpoint from a lot of fiction/tv/movies.
The story was engaging and had characters that you really liked.
The only thing I would say was a negative point, is that I found it quite predictable. Having said that, I really didn't mind all that much, because there was enough going on to keep me interested, which is why it gains a 5 star rating from me.
If you like books about undercover war time agents, this is a great read.
It's set right before the war starts which is really interesting, seeing the build up to the war, and the work that the undercover agents were doing at that time.
It was quite simply excellent. ( )