Special Investigation Nine

Special Investigation Nine Season 4

TV Show

Season 4 Plot

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.

Special Investigation Nine Season 4 aired on April 7th, 2021.

Season 4 Episodes

1. Gray Suspect

April 7th, 202145 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

April 14th, 202145 min

3. Best Day

April 21st, 202145 min

4. Prayer

April 28th, 202145 min

5. Killing Blueprint

May 5th, 202145 min

6. Cursed Picture

May 12th, 202145 min

7. Murder Puzzle

May 19th, 202145 min

8. Hedgehog in a Locked Room

May 26th, 202145 min

9. Flying Suspect

June 2nd, 202145 min

10. Episode 10

June 9th, 2021

11. Episode 11

June 16th, 2021

12. Episode 12

June 23rd, 2021

13. Episode 13

June 30th, 2021

All Seasons

Season 7

Season 7

Apr 3, 2024
Season 6

Season 6

Apr 5, 2023
Season 5

Season 5

Apr 6, 2022
Season 4

Season 4

Apr 7, 2021
Season 3

Season 3

Apr 8, 2020
Season 2

Season 2

Apr 10, 2019
Season 1

Season 1

Apr 11, 2018
Specials

Specials

Apr 7, 2019