Joker: Unforgiven Investigator - Season 1 Episode 4 Crime 4 The mystery hidden behind the random killing
- Genre: Crime, Drama
- Studio: Fuji TV
- Keyword: detective, investigation, vigilante, police force
- Cast: Masato Sakai, Ryo Nishikido, Anne Watanabe, Ryo, Hiroyuki Hirayama, Ren Osugi