Overview: Lisa Mishima is having problems at school and at home when two mysterious boys transfer to her school, and she is caught up in a terrorist attack.
Overview: While the police work hard to analyze Sphinx's first attack, Sphinx uploads a new video. Will they solve the new riddle in time?
Overview: Shibazaki joins the team working on the Sphinx Case while Sphinx tries to confirm suspicions of their own with their next riddle.
Overview: In response to earlier provocation, Shibazaki is challenged with a riddle this time only he can solve in order to stop the bomb from blasting but at one condition, no one can cheat.
Overview: As Lisa recuperates at Nine and Twelve's place, Sphinx sets another bomb and posts another riddle, but things don't go as planned this time.
Overview: Five takes over the battle of wits against Nine and Twelve as Lisa tries to find her place in their group, but Shibazaki isn't happy sitting by idly.
Overview: The game is on at the airport and lives are at stake as Shibazaki and his team stumble into the middle of Nine and Five's dangerous game of chess.
Overview: After the incident at the airport, Nine and Twelve are forced to abandon their hideout, and Shibazaki is suspended but keeps searching for the truth.
Overview: Twelve goes off to save Lisa while Shibazaki and Hamura learn more about the Athena Plan and the Rising Peace Academy.
Overview: Things come to a head as Nine and Twelve go their separate ways and Shibazaki talks to Mamiya, the man behind the Athena Plan.
Overview: Tokyo is in a state of emergency as the country readies itself for the atomic bomb explosion. Will the mystery of Sphinx finally be solved?