An introduction to Agile Project Management, that in fact mnanages to not be so full of itself as most of these books are. In my opinion, the authors explains in pretty clear terms the Agile mindset and toolboxes. And an old PM like myself can appreciate it.

Of course, it doesn't go into depth in any way, but it is a good introduction to the subject. So don't expect to understand the finer point after reading it!