Ninjutsu: The Secret Art of the Ninja Book

I read this because a character in a novel I'm writing told me that he practices ninjutsu. I thought ninjutsu was all about assassins in black doing acrobatic karate, but this book enlightened me on the subject. I really can't comment as to how good of a guide to actually practicing ninjutsu this is, but I can say it does a good job of explaining the philosophy behind the art and the specific practices it covers. The philosophy relates to life as well as fighting, and I think my character's study of ninjutsu will probably work as a controlling metaphor in my novel. Anyway, this is an interesting, quick read, and I really enjoyed it. I give it four out of five stars.