ママさん記者明衣子の事件　息子が担任教師を殺した!? (1999)

Takahashi Meiko (Mano Azusa) used to work at a large newspaper company. However, she is now an ordinary housewife. She receives a call from Sasame (Kanda Masaki), a former colleague who is now working at another company asking her for her help. She is informed that a murder has taken place when she arrives and goes to the scene of the crime. She learns that the victim was her son’s intermediate school teacher.