A letter from someone wanting to intimidate the popular female go player Nagai Chisato. Komiyama Shiho brings back the threatening leader and verifies that is referencing a murder case. The murder it is referencing is recent. Miyamoto Maria has been found strangled in the park. They find her license and the business card naming the cabaret club she worked for. As the case unfolds, Naoki declares that the team will definitely solve the case...