A woman has been murdered. Her killing seems unrelated to the series that Usagi and Inspector Ishida are investigating. A look into her past, however, connects her to the three previous victims, but the evidence points to her as the killer! When higher-level bureaucrats and officials stonewall the investigation, though, questions and suspicions are raised. It's a murder mystery feudal style, in part two of "The Hairpin Murders," as Usagi untangles a hair-raising web of betrayal and deceit that spans a decade.