A team of tenacious detectives study the minds of murderers at a time when Korea's first serial murders terrorized the nation. Based on true events.
as Song Ha-young
as Yoon Tae-goo
as Kook Young-soo
as Jung Woo-joo
as Baek Jun-shik
as Nam Il-young
as Heo Gil-pyo
as Oh In-tak
as Lee Jin-chul
as Im Moo-sik
as Park Young-shin
as Kim Bong-shik
as Choi Yoon-ji
