Japan / SEASON
Season 4
13 listed episodes · First aired April 7, 2021

Season overview
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.
EPISODE GUIDE
Full guide ↗Episodes
E1Gray Suspect
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…
E2Murder DesignerE3Best DayE4PrayerE5Killing BlueprintE6Cursed PictureE7Murder PuzzleE8Hedgehog in a Locked RoomE9Flying SuspectE10Episode 10E11Episode 11E12Episode 12E13Episode 13