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.
Kim Hyeong-min
Kang Tae-oh
Kim Soo-min
Detective Jo
Chief of Crime Department
Ji-hee's Grandmother
Lawyer
Jeong-bong
Detective Han
Hair Salon Manager
