This (german) book provides a quick overview about Scrum. I read it a couple of weeks ago to get a fresh overview again about the whole process and it’s roles and meetings right before my Scrum Master Certification.
It doesn’t tell you much new about Scrum if you are practicing it already, but it sums up all important bits and pieces very efficiently and easy to read. It is not going too far into details, there are other books for that.
I would especially recommend this book, if you are new to Scrum and want to get a quick overview on what it is about. It even provides some checklists, which might be helpful for new Scrum practitioners. What I especially liked about this book: It’s also good as a reference for beginners. If you can’t remember a certain thing like responsibilities of a product owner, you will quickly find it and get a condensed summary to read up.