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.
Bong Soo-chul
Kang Min-ju
Lieutenant Pyo
Team Leader Kim
Detective Heo
Park Shi-jong
Joo Sang-hoon
Detective Na
Deputy Chief Go
Ma Goo-ri
Detective Lee
Team Leader Kim's Wife
Lawyer Song
Special Investigation Bureau
Butcher Group
Homeless
Function Colleague
Caps Scraper
Stunts
Editor
Cinematography
Director
Producer
Art Direction
Adaptation
Screenplay
Fight Choreographer
