The #9 investigation team has been disbanded and members of the #9 investigation team have been scattered around. One year later, the Chief of the National Police Agency, Sojiro Kandagawa, orders the creation of a special investigation team to cover from the initial investigation until it is sent to the prosecutor's office. Sojiro Kandagawa appoints Sakutaro Munakata as the leader of the special investigation team. Former #9 investigation team members join the special investigation team.
Special Investigation Nine (Season 4)
Gray Suspect (Episode 1)
Air date: 2021-04-07
Runtime: 45 min
Overview: A young woman's stabbed body is found about 10 days after her death in a vacant store in a multi tenant building. The Tokusou team begin investigating, discovering her identity and the fact she promised to meet a man on the day of her death. Meanwhile, the suspect of a murder-robbery case is claiming he saw someone else do the crime.
Murder Designer (Episode 2)
Air date: 2021-04-14
Runtime: 45 min
Best Day (Episode 3)
Air date: 2021-04-21
Runtime: 45 min
Prayer (Episode 4)
Air date: 2021-04-28
Runtime: 45 min
Killing Blueprint (Episode 5)
Air date: 2021-05-05
Runtime: 45 min
Cursed Picture (Episode 6)
Air date: 2021-05-12
Runtime: 45 min
Murder Puzzle (Episode 7)
Air date: 2021-05-19
Runtime: 45 min
Hedgehog in a Locked Room (Episode 8)
Air date: 2021-05-26
Runtime: 45 min
Flying Suspect (Episode 9)
Air date: 2021-06-02
Runtime: 45 min
Episode 10 (Episode 10)
Air date: 2021-06-09
Episode 11 (Episode 11)
Air date: 2021-06-16
Episode 12 (Episode 12)
Air date: 2021-06-23
Episode 13 (Episode 13)
Air date: 2021-06-30
