Episodes: Series - Through the Darkness - 2022

• episode #1
• episode #2
• episode #3
• episode #4
• episode #5
• episode #6
• episode #7
• episode #8
• episode #9
• episode #10
• episode #11
• episode #12

Frustrated with the useless investigation, Young-su forms a team to analyze criminal behavior collaborating with Detective Ha-yeong, who can plumb the depths of others' minds and see through their darkness.

Ha-yeong encounters dangerous criminals and struggles to discover their true selves, delving into the thoughts and intentions of those who commit evil crimes and tracing what made them fall into the abyss of evil.

A victim's body part is found in an alley, and a five-year-old girl, Lee Soo-young, is reported missing.

The Behavioral Analysis Team and the Special Crimes Team team up to search for the body of a missing girl.

Ha-young and Young-su interview Jo Hyeon-gil, and the two soon try to look inside his head, but are disoriented by the unbearable evil aura.

Ha Young and Young Soo continue to search for the main suspect in the murder case of an elderly man, and the team suspects that a murder in Hwanghwa-dong is connected to the case.

A murderer who committed a crime against a wealthy elderly man disappears, and another similar but different murder occurs, and Ha-young struggles to uncover the identity of the perpetrator.

After Young Chun is arrested, he attempts to escape and attacks Tae Gu injuring her in the process.

Ha-young focuses on chasing a brutal criminal, and the police struggle against the criminal whose tools and methods gradually change to ferocity.

Ha-young finally confronts Nam Ki-tae, and tries to find out the full story of the incident. The police begin to search Nam Ki Tae's house thoroughly, and Nam Ki Tae's evil heart is revealed.

As a series of mysterious disappearances occur, the police discover unusual energy, and Ha-young is in crisis. Young-soo spends the day in pain because he believes what has happened to Ha-young was his fault.

The team arrests the prime suspect in a woman's disappearance, but they don't have enough evidence to convict him.