Ep. 108: Hajime Solves Watanabe's Final Riddle to Reveal the Murderer
Aired on October 25, 1999

108
In this installment, Hajime successfully deciphers the last puzzle left by Watanabe. This breakthrough allows him to identify the individual truly accountable for the series of murders. The narrative focuses on the resolution of the case through the interpretation of Watanabe's final clues, leading to the exposure of the culprit responsible for the crimes.
Episodes
- Ep. 104 · Hajime and Kenmochi dine at a restaurant where Kindaichi detects a prior half murder
- Ep. 105 · Hajime and classmates investigate a facility after their cabin is trashed during camping trip
- Ep. 106 · Investigation into the Demon Dog Forest Murder Case File 2
- Ep. 107 · Investigation into the third murder case within Demon Dog Forest
- Ep. 108 · Hajime Solves Watanabe's Final Riddle to Reveal the Murderer
- Ep. 109 · Akechi's Past Concerto Involving Reona Kirishima's Death Ten Years Ago
- Ep. 110 · Akechi discovers a lethal poisoned spike hidden within piano keys
- Ep. 111 · Hajime investigates a suicide and local funeral customs in Yukikage Village
- Ep. 112 · Investigation into the Yukikage Village Murders Involving Fuyumi and Ayahana