Through the Darkness

• 
  E1

  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.

  2022-01-14 · 68m
• 
  E2

  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.

  2022-01-15 · 67m
• 
  E3

  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.

  2022-01-21 · 70m
• 
  E4

  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.

  2022-01-22 · 65m
• 
  E5

  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.

  2022-01-28 · 68m
• 
  E6

  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.

  2022-01-29 · 66m
• 
  E7

  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.

  2022-02-25 · 71m
• 
  E8

  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.

  2022-02-26 · 65m
• 
  E9

  Becoming the Monster

  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.

  2022-03-04 · 66m
• 
  E10

  I Just Liked It

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

  2022-03-05 · 67m
• 
  E11

  The Victims And Their Families

  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.

  2022-03-11 · 73m
• 
  E12

  The Hearts of Criminals

  Police and the analysis team investigate a murder suspect who is known for charming women and luring them into his car.

  2022-03-12 · 68m

Top cast

Kim Nam-gil

Song Ha-young

Kim So-jin

Yoon Tae-goo

Jin Sun-kyu

Kook Young-soo

Ryeoun

Jung Woo-joo

Lee Dae-yeon

Baek Jun-shik

Jung Soon-won

Nam Il-young

Kim Won-hae

Heo Gil-pyo

Hong Woo-jin

Oh In-tak

Jo Young-jin

Lee Jin-chul

Lee Haney

Im Moo-sik

Kim Hye-ok

Park Young-shin

Seo Dong-gab

Kim Bong-shik