第 6 集: Kazuta之死與John Walker身份調查
Kazuta attacks Hondomachi and Matsuoka, but only Matsuoka is injured. Hondomachi kills Kazuta after a brief struggle, and Inami is arrested. Shortly after these events, the investigation team is shown attending Nishimura's funeral. They contemplate the identity and mind infiltration methods of John Walker. Kazuo deduces Walker might be using some form of the special cockpit chairs used to enter id wells, and remembers that the inventor of the Mizuhanome is missing. He also ponders with Masamune if Walker might be someone they know. Togo decides to use her position to try and find more information about the Mizuhanome. In the aftermath of the Gravedigger case, the forensic team discovers mics and cameras in the houses of the Perforator, the Gravedigger, and the Challenger, leading them to believe John Walker was keeping tabs on all of his serial killer protégés. Sakaido enters Inami's id well to investigate her motives, and John Walker is briefly seen. In the real world, Matsuoka recommends Hondomachi to be an id well detective, but reveals to her in private that he only did so because he is uncomfortable with her penchant for violence. (Source: Wikipedia)
集數
- 第 2 集 · Sakaido 與 John Walker 相遇，同時 Hondomachi 策劃從 Perforator 手中自救。
- 第 3 集 · 煙火師連環殺手利用煙火狙擊路人後遭逮捕
- 第 4 集 · 成日沙回到現場調查模仿殺人犯「掘墓人」，同時春河奏太現身。
- 第 5 集 · Kazuta 作為 Gravedigger 的身份曝光，導致致命爆炸，並揭曉 Inami 為幕後黑手。
- 第 6 集 · Kazuta之死與John Walker身份調查
- 第 7 集 · 本町調查鳴久和飛瀨琪琪，同時桃木被栽贓給約翰·沃克
- 第 8 集 · Togo 率領救援任務，從 Kiki Asukai 的 id 井中救出 Hondomachi，而 Momoki 則面臨警方訊問。
- 第 9 集 · Narihisago 帶著完整記憶與新能力，回到 Muku 遇害的那一天。
- 第 10 集 · Narihisago 調查 John Walker，同時 Kiki 的精神狀態惡化，Well 世界也隨之崩解。