Korea's first recorded serial killer sparks a massive manhunt. Local cops soon zero in on a suspect, but an ambitious detective is convinced they have got the wrong man and begins his own investigation. He quickly realises a pattern is emerging - but competition and tension lead to mistakes, and the killer looks set to elude them again. Taut fact-based drama, starring Song Kang-ho, Kim Sang-gyeong and Kim Roi-ha. In Korean with English subtitles