Total Seasons :2Total Episodes : 32
An unlikely partnership is forged, between a passionate cop and an emotionless prosecutor, to bring an evasive serial killer to justice.


As a teen, prosecutor Hwang Si-mok received surgical treatment for his abnormally developed brain, but the procedure left behind serious side effects.
Air Date : 2017-06-10

The convict's strong plea for his innocence prompts Si-mok to review the CCTV clip. At the Yongsan police station, he runs into officer Han Yeo-jin.
Air Date : 2017-06-11

Si-mok volunteers to appear on live national TV to discuss Kang Jin-seob. He also makes a bold promise to find the culprit within two months.
Air Date : 2017-06-17

Rumors quickly spread about Si-mok's violent nature. Regardless, he persists in his investigation. He finds his mentee, Young Eun-su, suspicious.
Air Date : 2017-06-18

Si-mok, puzzled by the details of the most recent murder case, visits the victim's home to seek more clues. Yeo-jin joins him in the investigation.
Air Date : 2017-06-24

New pieces of evidence only increase the list of possible suspects. In the midst of the confusion, a few begin to question Si-mok's innocence.
Air Date : 2017-06-25

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 River, Yeo-jin stops him.
Air Date : 2017-07-01

Enraged by what the police did to Park Kyung-wan, Yeo-jin tries to confront her superior but is stopped by Si-mok, who warns her of the consequences.
Air Date : 2017-07-02

Si-mok selects key lawyers and police officers to be part of the special investigations team. Their probe begins with Dong-jae as the starting point.
Air Date : 2017-07-08

Fearing for Ga-young's safety, Yeo-jin proceeds to transfer her to a different hospital. A nurse informs Yeo-jin of something strange that happened.
Air Date : 2017-07-09

The truth behind Ga-young's convulsions is revealed. Chang-jun's wife receives a travel ban. Woo-gyun asks Chang-jun to help him get out of his mess.
Air Date : 2017-07-15

Si-mok and Yeo-jin discover perplexing leads while searching Kyung-wan's basement. Dong-jae goes back to Chang-jun's office to fetch his cell phone.
Air Date : 2017-07-16

Returning home from the rooftop party, Si-mok discovers that an intruder has left something in his bedroom. Yeo-jin and Geon come over right away.
Air Date : 2017-07-22

Yeo-jin suspects a new killer is involved in the latest murder incident. Meanwhile, Si-mok collapses after leaving the autopsy.
Air Date : 2017-07-23

Yeo-jin collects evidence as Si-mok interrogates the suspect. Many questions get answered, but the most important problem of all remains to be solved.
Air Date : 2017-07-29

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 futures of many people.
Air Date : 2017-07-30

(Hwang Si-mok)

(Han Yeo-jin)

(Seo Dong-jae)

(Lee Chang-jun)

(Young Eun-soo)

(Lee Yeon-jae)

(Kang Won-chul)

(Choi Yun-soo)

(Lee Yun-beom)

(Jang Geon)

(Young Il-jae)

(Park Sun-chang)

(Kim Ho-seob)

(Kim Woo-gyun)

(Kim Su-chan)

(Kim Jung-bon)

(Yoon Se-won)

(Park Kyung-wan)

(Choi Young)

(Kim Ga-young)

(Seo Sang-won)

(Assisting Officer Jo Hye-sun)

(Park Moo-sung)

(Park Moo-sung's mother)

(Kang Jin-seob)

(Young Eun-soo's mother)

(Kim Tae-gyun)

(Hwang Si-mok's mother)

(Ahn Seung-ho)

(Kim Byung-hyun)

(Kim Nam-jin)

























