A very good book on how to apply a number of tools and approaches to a management consulting engagement.

I like the writing style, even if the use of a fictional case study always make it a bit harder to swallow. Admittedly, they make it a lot better than a number of their competitors.

If you're interested in management consulting, this is really recommended reading, but be aware of that this is the first part of two (you really need both Book One and Book Two.).