Dark Figure of Crime Episode 1

Hyung Min is a respected detective. He is aware of Tae Oh who is in prison for murder. One day Hyung Min receives a phone call from Tae Oh in prison. Tae Oh confesses to Hyung Min that he committed 7 more murders and gives Hyung Min clues on the murders. No one believes Tae Ohs confession except for Hyung Min. Without knowing ab who the victims are Hyung ...