Japan, 1699. On a moonlit night in Ezogashima, the northernmost island of Japan, a woman is running through the forest when an arrow zooms out of the darkness to strike her dead. Meanwhile, a world away in the city of Edo, the eight-year-old son of Sano Ichiro, the samurai detective who has risen to power and influence in the shogun's court, vanishes during a moon-watching party. When Sano's political rival, Lord Matsudaira, hints that the boy may...