Season 1
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.
All Episodes
Episode 1
Red Cap Incident
January 14, 2022
Song Ha-yeong pursues a criminal known for targeting young women. Kook Yeong-su looks to form a team of criminal behavioral analysts.
Episode 2
Habits of Criminals
January 15, 2022
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.
Episode 3
Ha-yeong Meets Tae-gu Again
January 21, 2022
The grisly murder of a child catches the attention of Ha-yeong and Yeong-su. A determined police captain clashes with the team.
Episode 4
What Must We Remember?
January 22, 2022
When a suspect’s home is searched, the police make a gruesome discovery. Ha-yeong and Yeong-su grow frustrated as the investigation continues.
Episode 5
Looking into the Minds of Evil
January 28, 2022
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.
Episode 6
The Man With the Hiking Boots
January 29, 2022
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.
Episode 7
A Scary Wolf Inside the Rabbit Burrow
February 25, 2022
Ha-yeong spends time with his mother on his birthday. With two killers on the loose, the investigators are faced with high-pressure stakes.
Episode 8
There Are No Perfect Crimes
February 26, 2022
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.
Episode 9
Becoming the Monster
March 4, 2022
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.
Episode 10
I Just Liked It
March 5, 2022
During interviews and crime scene reenactments, Ha-yeong and the police dive deep into a ruthless suspect's psyche and past trauma.
Episode 11
The Victims And Their Families
March 11, 2022
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.
Episode 12
The Hearts of Criminals
March 12, 2022
Police and the analysis team investigate a murder suspect who is known for charming women and luring them into his car.