Episode Title:
Call & Response.
Episode Description:
The police investigation reveals that high temperature thermite-based the bombs were used. The subsequent building collapse left several people with minor injuries but no fatalities, despite the large scale destruction. Lisa returns home, shaken by the incident, but her paranoid mother breaks down and berates Lisa for ignoring her and accuses her of planning to leave like her husband. Meanwhile, Nine and Twelve start work on a cellphone bomb. They release a second video with a riddle from Oedipus Rex hinting to the location of their next bombsite. After deducing what appears to be the site referred to in the riddle, police move to the suspected location, a DNA laboratory. Shibazaki phones the chief of police, Kurahashi, with alternative interpretation of the riddle, suggesting that the bomb will be at the Roppongi police district office. After the bomb discharges in the district office instead of the lab, Kurahashi asks Shibazaki to return to the detective division from archives. Kurahashi then reveals the theft of the Aomori plutonium to Shibazaki and the fact that the letters "VON" were found at both locations. Lisa follows Twelve to the scene of the explosion, but he threatens to kill her if she reveals their secret.
