Totsukawa Keibu Kinu No Isan to Ue Shin Dentetsu Chohen Suiri Shosetsu (NON NOVEL 1025)

[Machine Translation] Detective Nishimoto of the Metropolitan Police Department's Investigation Division was poisoned to death at the Tomioka Silk Mill, a World Heritage Site in Gunma Prefecture. Inspector Totsukawa was frozen by the death of his young ace who had worked with him on a difficult case. As he begins his investigation, a mysterious duo emerges, with whom Nishimoto was working on the day of the crime. Nine months earlier, Nishimoto had taken a break from the investigation to take pictures of the Jyoshin Electric Railway running through Tomioka. Why did they take pictures of the train? Eventually, the disappearance of Miki Makino, a high school alumna, is discovered, and Totsukawa suspects a connection to Nishimoto's death. Then, a woman's body is found murdered at Darumadera temple in Takasaki, and it is discovered that Nishimoto had been praying at Darumadera temple...

警視庁捜査一課の西本刑事が、群馬県の世界遺産・富岡製糸場で毒殺された。難事件に共に挑んできた若きエースの死に、十津川警部は凍りついた。捜査に乗り出すと、犯行当日、西本が行動を共にしていた謎の二人組が浮上。九ヵ月前には、西本は捜査を休み、富岡を走る上信電鉄の写真を撮影していた。なぜ列車の写真を撮ったのか?やがて、高校の同窓生・牧野美紀の失踪が判明、十津川は西本の死との関連を疑う。そんな折、高崎の達磨寺で女性の他殺体が発見され、西本が達磨寺で特別祈祷をしていたことが判る...。