Through the Darkness

What Must We Remember?

65 min

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

68 min

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

66 min

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

71 min

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

65 min

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.

Becoming the Monster

66 min

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.

I Just Liked It

67 min

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

The Victims And Their Families

73 min

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.

The Hearts of Criminals

68 min

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