Keishichou Sousa Ikka 9-Gakari Season 8

Hiroko Tsukuura, the owner of a popular bakery shop, is found dead on a trail near her home. Her head was bludgeoned by a metal bat. People believe her killer was someone that held a grudge against her. Tsunehiko Watase wonders why her killer kept hitting her on the back of her head.
3 years ago, Hiroko Tukuura beat her husband to death with a metal bat. She suffered from domestic violence. On the day she killed her husband, her husband beat her with the same bat. A young civil-rights attorney defended Hiroko Tsukuura, and she was able to walk free. After that horrific incident, she began using her maiden name and became successful.
Shiho Komiyama orders the #9 investigation team to investigate this case and also what happened 3 years earlier. Yasushi Aoyagi and Hideaki Yazawa interview bakery shop manager Noboru Sakuragi and his staff. They learn that ex-detective Yasunori Odawara, who handled the case 3 years ago, recently visited Hiroko Tsukuura.
Meanwhile, Rintaro Kano and Naoki Asawa visit Hiroko Tsukuura's ex-mother-in-law. Her former mother-in-law blamed Hiroko for her son's death and harassed her. The results from Hiroko's autopsy come in, and there are unexpected results. A hidden truth from 3 years earlier is revealed.