A serial killer is caught for his seventh murder. A cop tries to solve the first six cases with the killer's help, but starts to suspect that he has ulterior motives. Based on a true story.
Not streaming on a subscription service in the US right now.
Starring Kim Yoon-seok, Ju Ji-hoon, Moon Jeong-hee, Jin Sun-kyu, Jeong Jong-jun, Heo Jin, Kim Joong-ki, Kim Young-woong, Jeong Gi-seop, Kim Mi-hwa