This Is Law
This Is Law2001
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A vigilante known as "Dr. Q" gruesomely executes criminals who escape justice, uploading videos of his killings online. Young cop Bong and his seasoned partner Na investigate while clashing with S.T.F. counterparts Lt. Pyo and tech expert Kang.
| Actor | Role |
|---|---|
 Im Won-heeBong Soo-chul | Bong Soo-chul |
 Shin Eun-kyungKang Min-ju | Kang Min-ju |
 Kim Min-jongLieutenant Pyo | Lieutenant Pyo |
 Joo HyunTeam Leader Kim | Team Leader Kim |
 Jang Hang-seonDetective Heo | Detective Heo |
 Kim Kap-sooPark Shi-jong | Park Shi-jong |
 Lee Byung-wookJoo Sang-hoon | Joo Sang-hoon |
| YYoon Seung-wonDetective Na | Detective Na |
 Yun Ju-sangDeputy Chief Go | Deputy Chief Go |
 Kim Young-woongMa Goo-ri | Ma Goo-ri |
 Kwon Tae-wonDetective Lee | Detective Lee |
 Hyun Sook-heeTeam Leader Kim's Wife | Team Leader Kim's Wife |
 Heo Seon-haengLawyer Song | Lawyer Song |
| OOh Seong-taeSpecial Investigation Bureau | Special Investigation Bureau |
 Sung Ki-yoonButcher Group | Butcher Group |
 Kim Gyeong-ryongHomeless | Homeless |
 Kim Koo-taekFunction Colleague | Function Colleague |
 Lee Yong-jikCaps Scraper | Caps Scraper |
| PPark Kyeong-hwanNot listed | Not listed |