Season 1
16 episodes · Jun 10, 2017
An unlikely partnership is forged, between a passionate cop and an emotionless prosecutor, to bring an evasive serial killer to justice.
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S1E1I Am Innocent
Jun 10, 201777mAs a teen, prosecutor Hwang Si-mok received surgical treatment for his abnormally developed brain, but the procedure left behind serious side effects.
S1E2Just Turn On The Lights
Jun 11, 201769mThe 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.
S1E3A New Possible Suspect
Jun 17, 201776mSi-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.
S1E4Kwon Min Ah
Jun 18, 201769mRumors quickly spread about Si-mok's violent nature. Regardless, he persists in his investigation. He finds his mentee, Young Eun-su, suspicious.
S1E5The Second Huam-dong Case
Jun 24, 201763mSi-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.
S1E6The Ringtone
Jun 25, 201764mNew 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.
S1E7Ga Young's Phone
Jul 1, 201771mSi-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.
S1E8Western Seoul Prosecutors' Office
Jul 2, 201767mEnraged 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.
S1E9Special Investigation
Jul 8, 201766mSi-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.
S1E10Revelation
Jul 9, 201767mFearing 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.
S1E11Cold and Damp
Jul 15, 201768mThe 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.
S1E12Disbandment
Jul 16, 201766mSi-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.
S1E130 and 7
Jul 22, 201767mReturning 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.
S1E14Another Body
Jul 23, 201766mYeo-jin suspects a new killer is involved in the latest murder incident. Meanwhile, Si-mok collapses after leaving the autopsy.
S1E15Accomplice
Jul 29, 201777mYeo-jin collects evidence as Si-mok interrogates the suspect. Many questions get answered, but the most important problem of all remains to be solved.
S1E16A Monster
Jul 30, 201786mSi-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.