

About
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.
Cast
Episodes
Season 1

Red Cap Incident
Song Ha-yeong pursues a criminal known for targeting young women. Kook Yeong-su looks to form a team of criminal behavioral analysts.

Habits of Criminals
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.

Ha-yeong Meets Tae-gu Again
The grisly murder of a child catches the attention of Ha-yeong and Yeong-su. A determined police captain clashes with the team.

What Must We Remember?
When a suspect’s home is searched, the police make a gruesome discovery. Ha-yeong and Yeong-su grow frustrated as the investigation continues.

Looking into the Minds of Evil
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.

The Man With the Hiking Boots
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.

A Scary Wolf Inside the Rabbit Burrow
Ha-yeong spends time with his mother on his birthday. With two killers on the loose, the investigators are faced with high-pressure stakes.

There Are No Perfect Crimes
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.
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