
Special Investigation Nine — Season 4
New enemies appear to block the Tokusou 9. As in the past, the Tokusou 9 hold on to their belief that "the case will be solved at all costs" and put their all into solving cases.
About this season
New enemies appear to block the Tokusou 9. As in the past, the Tokusou 9 hold on to their belief that "the case will be solved at all costs" and put their all into solving cases.
Episodes (13)

1. Gray Suspect
Aired 7 April 2021 • 45 min
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.

2. Murder Designer
Aired 14 April 2021 • 45 min

3. Best Day
Aired 21 April 2021 • 45 min

4. Prayer
Aired 28 April 2021 • 45 min

5. Killing Blueprint
Aired 5 May 2021 • 45 min

6. Cursed Picture
Aired 12 May 2021 • 45 min

7. Murder Puzzle
Aired 19 May 2021 • 45 min

8. Hedgehog in a Locked Room
Aired 26 May 2021 • 45 min

9. Flying Suspect
Aired 2 June 2021 • 45 min

10. Episode 10
Aired 9 June 2021

11. Episode 11
Aired 16 June 2021

12. Episode 12
Aired 23 June 2021
13. Episode 13
Aired 30 June 2021