the Koka Ryu Ninjutsu Densho, a small but important work from the Edo period that reveals the realm of ninja magic and spells.the Shinobi Hiden, or 'Secret Ninja Tradition,' a documentation of techniques commonly attributed to one of the best-known ninja masters, Hattori Hanzo.Translated into English for the very first time, this widely sought-after collection of historical documents brings to light the secret practices, techniques, philosophies, and lifestyles of the shinobi. What do we really know about the historical shinobi, his tactics, and his role in medieval Japanese society? In Secret Traditions of the Shinobi, these questions-and many more-are answered. The shinobi, or ninja, is one of the most widely recognized figures in the world of espionage-and also one of the most misrepresented. The Secret Traditions of the Shinobi Book Review: