Sakaido comes across a strange person in the Perforator's id well known as John Walker, but knocks him out before he says anything. Walker is a mysterious man who came in contact with several serial killers prior to their killing sprees. Togo and Hayaseura deduce Walker might be a serial killer creator, entering the minds of individuals and convincing them to kill. Meanwhile, Hondomachi awakens strapped to a table in the Perforator's lair. She purposely has the Perforator drill into her head to create a new id well for Sakaido to investigate, leading to the Perforator's capture and Hondomachi's rescue.