Total Seasons :1Total Episodes : 12
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.


Song Ha-yeong pursues a criminal known for targeting young women. Kook Yeong-su looks to form a team of criminal behavioral analysts.
Air Date : 2022-01-14

Ha-yeong consults a criminal to understand a killer’s motives. An arrest leads to a startling interrogation session and a break in the case.
Air Date : 2022-01-15

The grisly murder of a child catches the attention of Ha-yeong and Yeong-su. A determined police captain clashes with the team.
Air Date : 2022-01-21

When a suspect’s home is searched, the police make a gruesome discovery. Ha-yeong and Yeong-su grow frustrated as the investigation continues.
Air Date : 2022-01-22

A crooked new police chief causes trouble for the team. The deaths of a professor and his wife touch off a series of brutal murders.
Air Date : 2022-01-28

Yoon Tae-gu and Kim Bong-sik seek to set boundaries on the behavioral analysis team. A complex investigation sends the police down a twisted path.
Air Date : 2022-01-29

Ha-yeong spends time with his mother on his birthday. With two killers on the loose, the investigators are faced with high-pressure stakes.
Air Date : 2022-02-25

A chase takes a risky turn. When a suspect asks for a high-ranking officer, Ha-yeong hatches a plan. A search for victims' bodies continues.
Air Date : 2022-02-26

The behavioral analysis team agrees to an interview with a journalist. Ha-yeong seeks to enter the killer’s mind, but it takes a toll on him.
Air Date : 2022-03-04

During interviews and crime scene reenactments, Ha-yeong and the police dive deep into a ruthless suspect's psyche and past trauma.
Air Date : 2022-03-05

A horrific accident forces Ha-yeong to reflect on the mental impact of his work. Meanwhile, two people go missing from a karaoke bar, raising suspicions.
Air Date : 2022-03-11

Police and the analysis team investigate a murder suspect who is known for charming women and luring them into his car.
Air Date : 2022-03-12

(Song Ha-young)

(Yoon Tae-goo)

(Kook Young-soo)

(Jung Woo-joo)

(Baek Jun-shik)

(Nam Il-young)

(Heo Gil-pyo)

(Oh In-tak)

(Lee Jin-chul)

(Im Moo-sik)

(Park Young-shin)

(Kim Bong-shik)

(Choi Yoon-ji)

(Gu Young-chun)

(Detective)

(Nam Ki-tae)

(Park Dae-woong)

(Moon Tae-soo)

(Hwa-yeon's mother)

(Cho Hyun-gil)

(Woo Ho-sung)

(Jo Kang-moo)

(Choi Hwa-yeon)

(Bang Ki-hoon)

(Kang Yoo-min)

(Yang Yong-chul)

(Song Ha-young (young))

(Lee Soo-hyun)

(Soo-hyun's father)

(Soo-hyun's mother)
(Lee Ji-wook)

(Lee Chun-young)

(Professor An)

(Forensics examiner)

(Yang Ji-sook)

(Cotton candy girl)

(Undercover cop in drag)

(Nurse)

('Turtle' supermarket owner)

(Medical examiner)

(Hwa-yeon's landlord)

(Neighborhood single mother)
(Detective)

(Doctor)

(Deliveryman)

(Kang Jin-goo)

(Jang Deuk-hok)

(Detective)

(Film developer)

(Lim Hyun-joo)

(Mrs. Kim)

(Hyun-gil's landlord)

(Convenience store owner)

(Hwang Dae-sun)

(Han Seok-hoon)

(Detective)

(Man drinking with prosecutor)

(Bookstore employee)

(Kwak Man-hyun)

(Detective Kim)

(Witness)

(Detective)

(Anchorman)

(Columbarium employee)

(Victim)

(Victim's father)

(Detective)

(Manyeon bus stop woman)

(Christmas tree girl)

(Lee Cho-won)

(ATM woman)

(Massage parlor owner)

(Ji-sook's father)

(Ji-sook's mother)










