The Lone Samurai, written by William Scott Wilson, is a biographical Japanese feudal era book that chronicles the life and achievements of Miyamoto Musashi. Musashi, a legendary swordsman and strategist, is known for his undefeated record in duels and his authorship of The Book of Five Rings. The book provides a detailed account of Musashi's upbringing, training, and his philosophical insights. It offers a fascinating glimpse into the life of one of Japan's most iconic figures.