Tama Minamisho Tatakiage Keiji: Chikamatsu Heikichi 4 (2004)

Tama Minamisho Tatakiage Keiji: Chikamatsu Heikichi 4 2004 / 多摩南署たたき上げ刑事・近松丙吉4 2004 / Hosoi Akai Ito , 多摩南署たたき上げ刑事・近松丙吉(4)「細い赤い糸」が結ぶ動機なき連続殺人 , 多摩南署たたき上げ刑事・近松丙吉4 細い赤い糸

A corporate employee was beaten to death on his way home, and a red thread was attached to the back of his head. A few days later, a woman was beaten to death with the same method, and red threads were still left on her body. (Source: Japanese = tvdramadb || Translation = XuongPhim)