The Good Detective

The Good Detective is a South Korean television series starring Son Hyun-joo, Jang Seung-jo, Lee Elijah, Oh Jung-se and Ji Seung-hyun. It aired on JTBC from July 6 to August 25, 2020.

The drama was considered a success with the viewership ratings doubled from the start to finish and the possibility of sequel mentioned by production team. It was confirmed to return for second season which began its production around October 2021.

The season 2 began airing from July 30, 2022, on Saturday and Sunday at 22:30 (KST).

Synopsis
Set in Incheon, South Korea, the drama tells stories of those who try to hide ugly truths and those who uncover the truths.

Kang Do-chang (Son Hyun-joo) has worked as a detective for the past 18 years. He was born and raised in Incheon. He investigates cases using his experience and personal connections, forgoing scientific technique or reasoning power.

Oh Ji-hyuk (Jang Seung-jo) is an elite detective. He has 9 years of experience. Unlike Kang Do-chang, he investigates cases using evidence and insight into the criminal's psyche. Due to a trauma from his childhood, he does not share his feelings. He is wealthy thanks to his late uncle, who left him with a large inheritance.

Jin Seo-kyung (Lee Elijah) works as a newspaper reporter. She is a 5-year veteran and passionate about her work.

Main

 * Son Hyun-joo as Kang Do-chang
 * A tough and loyal detective of 18 years who investigates cases using his experience and personal connections, forgoing scientific technique or reasoning power. He is a senior detective of the Violent Crimes Division 2.


 * Jang Seung-jo as Oh Ji-hyuk
 * An elite homicide detective of 9 years, Oh Ji-hyuk investigates cases using evidence and insight into the criminal's psyche, unlike Kang Do-chang. He has insomnia due to a past trauma.


 * Lee Elijah as Jin Seo-kyung (Season 1)
 * A passionate veteran reporter who isn't afraid to reveal the truth and doesn't give in to outside pressure. After being known as a fierce freelance reporter, she was hired by Yoo Jung-seok for Junghan Daily.


 * Oh Jung-se as Oh Jong-tae (Season 1)
 * A chaebol businessman with questionable morals. He is Oh Ji-hyuk's cousin.


 * Ji Seung-hyun as Yoo Jung-seok (Season 1)
 * The head of Junghan Daily's social affairs department and Jin Seo-kyung's boss.


 * Kim Hyo-jin as Cheon Na-na (Season 2)
 * Director of TJ Group born out of wedlock to the group president and treated like an orphan.


 * Jung Moon-sung as Woo Tae-ho (Season 2)
 * TJ group's legal team leader and Cheon Na-na's husband.

West Incheon Police

 * Son Jong-hak as Moon Sang-bum
 * Senior detective and Chief of West Incheon Police Station.


 * Jo Hee-bong as Woo Bong-shik
 * Senior detective and team leader of Violent Crimes Division 2.


 * Cha Rae-hyung as Kwon Jae-hong
 * Incheon West Police Station Violent Team 2 Detectives (Sergeant)


 * Kim Ji-hoon as Byun Ji-woong
 * Incheon West Police Station Violent Team 2 Detectives (Sergeant)


 * Jung Soon-won as Ji Man-goo
 * Incheon Western Police Station Violent Team 2 Detective (Superintendent)


 * Kim Myung-joon as Shim Dong-wook
 * Incheon Western Police Station Violent Team 2 Detective (Superintendent)


 * Season 1
 * Yang Hyun-min as Nam Guk-hyun
 * Team Leader of Violent Crimes Division 1.


 * Shin Dong-mi as Yoon Sang-mi
 * A former detective who was promoted as an investigator of the Incheon West Police Station. She is investigating Kang Do-chang regarding his potential promotion.

TJ Group

 * Choi Dae-hoon as Cheon Sang-woo
 * Cheon Na-na's half-brother.


 * Hong Seo-young as Moon Bo-kyung
 * Team staff to fight between the 2nd strongest team and the TJ group.


 * Park Won-sang as Choi Yong-geun
 * The leader of the legal team that ignites the power struggle between the brothers.


 * Song Young-chang as Cheon Seong-dae
 * Chairman of TJ Group.

Seoul Metropolitan Police Agency

 * Lee Joong-ok as Jang Ki-jin
 * The team leader of the Seoul Metropolitan Police Agency.


 * Hong Sang-pyo as Jo Jin-cheol
 * Detectives from the Seoul Central Investigation Unit.

Kang Do-chang's family

 * Baek Eun-hye as Kang Eun-hee
 * Do-chang's younger sister


 * Yang Hee-won as Jae-woong
 * Kang Eun-hee's son


 * Lee Ha-eun as Lee Eun-hye
 * Lee Dae-chul's daughter and Kang Do-chang's adopted daughter.


 * Season 1
 * Park Ji-hwan as Kang Eun-hee's ex-husband and Jae-woong's father

Others

 * Season 1
 * Jo Jae-yoon as Lee Dae-chul, a death row inmate convicted of murdering Yoon Ji-sun.
 * Kim Ryeo-eun as Yoon Ji-sun, a painter and the murder victim.
 * Lee Seung-hoon as So Jae-sub, a lawyer who takes the case of Lee Dae-chul's retrial.
 * Son Byong-ho as Kim Gi-tae, a former public prosecutor who was caught in a corruption scandal and is in prison.
 * Jo Jae-ryong as Jo Sung-dae, Kim Gi-tae's subordinate.
 * Ahn Si-ha as Jung Yoo-seon, widow of the late detective Jang Jin-su.
 * Hwang Tae-gwang as Jang Jin-su, he was in charge of Yoon Ji-sun's murder case and died during investigation.
 * Lee Sang-woon as Song Gwang-hee, reporter at Junghan Daily.
 * Shin Jae-hwi as Park Hong-doo
 * Lee Hyun-wook as Park Gun-ho, a former prison guard who wants to prove Lee Dae Chul is innocent.
 * Season 2
 * Park Geun-hyung as Jung In-beom, Jung Hee-joo's grandfather who is a victim in a serial murder case.
 * Lee Seung-joon as Lee Han-joo, a prison guard.
 * Bang Eun-jung as Sung Joo-ri
 * Kim In-kwon as Lee Seong-gon, the bus driver in the city where the incident took place.
 * Ha Young as Jung Hee-joo, Victim Serial Murder and Hand-Painted Punctuation Shop Owner.
 * Baek Sang-hee as Kim Min-ji, Was a victim of Cheon Sang-woo's assault case.
 * Jo Tae-gwan as Michael Cha, CEO of McQueen Korea.
 * Park Ye-ni as Laura Kane, Lee Seong-gon's younger sister.

Special appearances

 * Season 2
 * Park Hyo-joo as bride of Kang Do-chang
 * Ko Chang-seok as Cha Moon-ho, Incheon District Office Prosecutor

Production
The early working title of the series is Silence.

The series was originally scheduled to premiere on April 27, 2020, but it was pushed back to July due to the COVID-19 pandemic.

After the series ended, executive producer Jo Jun-hyung revealed the possibility of a sequel in the interview with media.

On February 28, 2022, it was confirmed that actor Son Hyun-joo had tested positive for COVID-19, causing filming for season 2 to be suspended.

On March 7, 2022, it was reported that actor Son Hyeon-joo was released from COVID-19 quarantine on the 5th and resumed filming for season 2. The filming was completed in May 2022.

On June 28, 2022, a poster for Season 2 was released.

International broadcast

 * 🇲🇾 Malaysia: TV3 (23 June 2021)