The Spy by Paulo Coelho

So recently I read the book The Spy by Paulo Coelho. It was really good and I enjoyed it. The book is about Mata Hari and her life. It's written in a very interesting way through her final letter. The book is very short- about 180ish pages- but it's still good.
If you are looking for a short novel that is historical fiction than The Spy by Paulo Coelho is for you!