Sano Ichiro, the shogun's Most Honorable Investigator of Events, Situations and People, is sent to Black Lotus to investigate. But, as he has learned in the past, Sano can hardly hope to solve this case without the help of his new wife, the fiery Reiko, who not only can decipher just about any clue, but also knows things about the women of their class Sano could never know. Only together can they attack this most vicious of cases.