Japan, March 1700. Troops ambush and attack Lady Reiko, the wife of Sano Ichirō, the samurai detective who has risen to power and influence. The troops who have attacked Reiko appear to belong to Sano's enemy, Lord Matsudaira, who denies all responsibility. But if the rivals are not to blame, who is? Called away from the crisis by the shogun's orders to investigate a mysterious skeleton, Sano and his wife, Reiko, must confront dangerous, long-buried secrets. What was Sano's own mother doing on the night when a burning kimono ignited a blaze that nearly destroyed the city? The shogun gives Sano and Reiko just three days to find out, or risk losing not only their position at court but their families' lives as well.