Season 1 poster

Season 1

(2017)

Overview

An unlikely partnership is forged, between a passionate cop and an emotionless prosecutor, to bring an evasive serial killer to justice.

Cast

Cho Seung-woo as Hwang Si-mok
Cho Seung-woo

as Hwang Si-mok

Bae Doona as Han Yeo-jin
Bae Doona

as Han Yeo-jin

Lee Jun-hyuk as Seo Dong-jae
Lee Jun-hyuk

as Seo Dong-jae

Yoo Jae-myung as Lee Chang-jun
Yoo Jae-myung

as Lee Chang-jun

Shin Hye-sun as Young Eun-soo
Shin Hye-sun

as Young Eun-soo

Yoon Se-a as Lee Yeon-jae
Yoon Se-a

as Lee Yeon-jae

Park Seong-geun as Kang Won-chul
Park Seong-geun

as Kang Won-chul

Jeon Bae-soo as Choi Yun-soo
Jeon Bae-soo

as Choi Yun-soo

Lee Kyung-young as Lee Yun-beom
Lee Kyung-young

as Lee Yun-beom

Choi Jae-woong as Jang Geon
Choi Jae-woong

as Jang Geon

Lee Ho-jae as Young Il-jae
Lee Ho-jae

as Young Il-jae

Song Ji-ho as Park Sun-chang
Song Ji-ho

as Park Sun-chang

Lee Tae-hyeong as Kim Ho-seob
Lee Tae-hyeong

as Kim Ho-seob

Choi Byung-mo as Kim Woo-gyun
Choi Byung-mo

as Kim Woo-gyun

Park Jin-woo as Kim Su-chan
Park Jin-woo

as Kim Su-chan

Seo Dong-won as Kim Jung-bon
Seo Dong-won

as Kim Jung-bon

Lee Kyoo-hyung as Yoon Se-won
Lee Kyoo-hyung

as Yoon Se-won

Jang Seong-beom as Park Kyung-wan
Jang Seong-beom

as Park Kyung-wan

Kim So-ra as Choi Young
Kim So-ra

as Choi Young

Park You-na as Kim Ga-young
Park You-na

as Kim Ga-young

Yoon Tae-in as Seo Sang-won
Yoon Tae-in

as Seo Sang-won

Episodes

I Am Innocent poster

I Am Innocent 8.7

June 10, 2017

As a teen, prosecutor Hwang Si-mok received surgical treatment for his abnormally developed brain, but the procedure le…

Just Turn On The Lights poster

Just Turn On The Lights 8.5

June 11, 2017

The convict's strong plea for his innocence prompts Si-mok to review the CCTV clip. At the Yongsan police station, he r…

A New Possible Suspect poster

A New Possible Suspect 8.7

June 17, 2017

Si-mok volunteers to appear on live national TV to discuss Kang Jin-seob. He also makes a bold promise to find the culp…

Kwon Min Ah poster

Kwon Min Ah 8.8

June 18, 2017

Rumors quickly spread about Si-mok's violent nature. Regardless, he persists in his investigation. He finds his mentee,…

The Second Huam-dong Case poster

The Second Huam-dong Case 8.5

June 24, 2017

Si-mok, puzzled by the details of the most recent murder case, visits the victim's home to seek more clues. Yeo-jin joi…

The Ringtone poster

The Ringtone 8.5

June 25, 2017

New pieces of evidence only increase the list of possible suspects. In the midst of the confusion, a few begin to quest…

Ga Young's Phone poster

Ga Young's Phone 8.5

July 1, 2017

Si-mok and Yeo-jin team up to covertly pursue Seo Dong-jae. Just as Dong-jae is about to throw something into the Han R…

Western Seoul Prosecutors' Office poster

Western Seoul Prosecutors' Office 8.8

July 2, 2017

Enraged by what the police did to Park Kyung-wan, Yeo-jin tries to confront her superior but is stopped by Si-mok, who …

Special Investigation poster

Special Investigation 8.5

July 8, 2017

Si-mok selects key lawyers and police officers to be part of the special investigations team. Their probe begins with D…

Revelation poster

Revelation 8.8

July 9, 2017

Fearing for Ga-young's safety, Yeo-jin proceeds to transfer her to a different hospital. A nurse informs Yeo-jin of som…

Cold and Damp poster

Cold and Damp 8.2

July 15, 2017

The truth behind Ga-young's convulsions is revealed. Chang-jun's wife receives a travel ban. Woo-gyun asks Chang-jun to…

Disbandment poster

Disbandment 8.2

July 16, 2017

Si-mok and Yeo-jin discover perplexing leads while searching Kyung-wan's basement. Dong-jae goes back to Chang-jun's of…

0 and 7 poster

0 and 7 9.0

July 22, 2017

Returning home from the rooftop party, Si-mok discovers that an intruder has left something in his bedroom. Yeo-jin and…

Another Body poster

Another Body 8.8

July 23, 2017

Yeo-jin suspects a new killer is involved in the latest murder incident. Meanwhile, Si-mok collapses after leaving the …

Accomplice poster

Accomplice 9.0

July 29, 2017

Yeo-jin collects evidence as Si-mok interrogates the suspect. Many questions get answered, but the most important probl…

A Monster poster

A Monster 9.2

July 30, 2017

Si-mok sets out to meet the one he believes is the real murderer. He gets his hands on a bag that will determine the fu…