As of July 2026, The Good Detective Season 1 aired in 2020 with 16 episodes — streaming now on Netflix. Full episode guide and where to watch below.
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The Good Detective Season 1

2020 16 Episodes Crime · Drama ⭐ 7/10

The Good Detective Season 1 is currently streaming on and , and its case-by-case structure never gets in the way of the bigger story. The 1-season run is exactly the right length for what it is doing. 40 viewers have already rated it on TMDB — the kind of consensus that does not happen by accident. Son Hyun-joo sets the tone, and the ensemble matches it scene for scene. Put it on tonight and see for yourself.

Part of the current wave of titles people are actually watching, The Good Detective Season 1 earns its spot. The plotting gives The Good Detective Season 1 its backbone, but it is the characters you come back for. When doubts arise about a five-year-old murder conviction, a veteran detective partners with a young hotshot to hunt down the case's hidden truths. Son Hyun-joo and Jang Seung-jo lead a cast that brings real weight to the material. It was aired in 2020. What distinguishes the best crime dramas from the rest is whether the character work can carry scenes where the mystery takes a breath — The Good Detective Season 1 passes that test consistently. There is real craft here, even in the moments that do not fully land.

If you cannot walk away from a good mystery, The Good Detective Season 1 will keep you hooked. It has built its own audience without needing a direct comparison. A contained run means every episode is doing real work. Son Hyun-joo anchors it, but the writing does the real work. If you are going to commit to one crime drama this month, make it this one.

📡 Where to Watch The Good Detective Season 1

🇦🇺 Australia
🇺🇸 United States
🇬🇧 United Kingdom
🇨🇦 Canada
🇳🇿 New Zealand
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🎬 The Good Detective Season 1 — Episode Guide

E1
The Murder Case From Five Years Ago
2020-07-06
On their first day as partners, detectives Kang Do-chang and Oh Ji-hyeok pick up a series of calls with perplexing connections to a closed murder case.
E2
No Sinner Shall Sleep Peacefully At Night
2020-07-07
Words get out of Incheon Seobu Police Station revealing that Lee Eun Hye, the daughter of a murderer Lee Dae Chul, has been kidnapped, murdered, and buried by a man who claims to be the culprit. As the news goes viral, people who were related to the murder case from five years ago tremble in fear of...
E3
The Execution
2020-07-13
The execution of death-row convict Lee Dae Chul nears as well as the evaluation for Do Chang’s promotion. Knowing that Lee Dae Chul has an alibi at the time of the murder, Do Chang needs to decide whether to save an innocent man or to submit to the authority. Meanwhile, Do Chang and Ji Hyuk are join...
E4
We Are Only Humans
2020-07-14
A big body of corruption sweeps over Violent Crimes Unit Two with the higher-ups continuously pressuring them to turn a blind eye to Lee Dae Chul’s case. Meanwhile, Ji Hyuk saves Seo Gyeong from Jo Seong Dae who is suspected of killing Park Gun Ho. Eventually, clues that lead to Lee Dae Chul’s innoc...
E5
We Are Trying To Save A Person’s Life
2020-07-20
While clues proving a corruptive body’s close relation to Lee Dae Chul’s case pile up, Do Chang figures out a work-around to carry out a secret investigation on Jo Seong Dae. On top of that, Ji Hyuk hints to him how his very cousin, Oh Jong Tae, may be partially responsible for Yoon Ji Sun’s death f...
E6
Not Everyone Is Self-Centered
2020-07-21
Do Chang confesses to Eun Hye that he wants to save her father, Lee Dae Chul. Unfortunately, Eun Hye can’t trust Do Chang who literally handcuffed and arrested her father for a murder he didn’t commit. However, Do Chang shows a sign of hope for Eun Hye by getting the re-trial approved. Meanwhile, Su...
E7
Every Truth Has Two Opposing Stories
2020-07-27
Although Do Chang and Mr. So prepare for the retrial of Lee Dae Chul’s case, Do Chang still needs to persuade Dae Chul to follow his lead because he is reluctant to take part in it due to the possibility of harm that it may cause his daughter. Meanwhile, Do Chang finds himself caught in a dilemma th...
E8
Do Chang on a Witness Stand
2020-07-28
It was already difficult enough for Do Chang and others to get a retrial approved. However, feeling desperate during the trial, Dae Chul falsely admits to his killing of Detective Jang Jin Soo. Meanwhile, Seo Gyeong receives a recording from an unknown sender of a conversation between Superintendent...
E9
A Voice Recording of Superintendent Moon
2020-08-03
After losing at the retrial, Do Chang gets demoted. With Do Chang out of the picture, Violent Crimes Unit Two also feels pointless to even fight for a comeback. Meanwhile, Ji Hyuk meets Seo Gyeong and finds out about a voice recording that she’s been keeping secret. Ji Hyuk and Do Chang then indirec...
E10
The One Behind Jo Seong Dae
2020-08-04
Do Chang gets reinstated and returns to Violent Crimes Unit Two after coming to an agreement with Superintendent Moon. The team then focuses on Park Gun Ho’s case and stumbles upon Jo Seong Dae’s bloodstain at the murder site. This leads to the revelation of Chief Nam's wrongdoing as well as a possi...
E11
Do Chang Goes After Oh Jong Tae
2020-08-10
With the help of a little stunt pulled off by Jae Hong, Do Chang gets one step closer to proving Oh Jong Tae’s crime. Meanwhile, Ji Hyuk barges into Yoo Jeong Seok’s office, asking if he is closely acquainted with his cousin, Oh Jong Tae. Even with all evidence closing in on him, Oh Jong Tae still h...
E12
You Can't Die Just Yet
2020-08-11
While Ji Hyuk manages to survive the ambush by Oh Jong Tae, the prosecution adds more pressure to Do Chang and his colleagues, invalidating their efforts to bring Oh Jong Tae down. Do Chang however continues to put pieces together and stumbles upon a crucial link that connects Oh Jong Tae to his evi...
E13
The Remains Of A Dead Body Near Gawol Church
2020-08-17
Jin Seo Gyeong hosts a secret meeting with Yoo Jeong Seok and Kim Gi Tae at Gawol Church, demanding them the truth regarding a missing person named Jo Seong Gi. In the meantime, Do Chang and Ji Hyuk successfully locate the missing dead body from five years ago. Despite the evidence against their fav...
E14
Those Who Deserve To Die
2020-08-18
Even after the arrest, Oh Jong Tae still has the audacity to claim his innocence and goes on to emphasize the incompetence and corruption of the police organization. Meanwhile, Seo Gyeong and Sang Mi sidestep to approach the matter in their own way. Eventually, Do Chang reaches Yoo Jeong Seok with a...
E15
Something Worth Dying For
2020-08-24
Yoo Jeong Seok admits to his doings before his junior reporters and leaves the office, ordering them to stay put until his next instruction. While being threatened by Oh Jong Tae, Nam Guk Hyun offers video footage of Jeong Seok’s murders. On the verge of being exposed, Jeong Seok willingly suggests ...
E16
The Last Target
2020-08-25
The shocking death of Yoo Jeong Seok stirs up the public, and the case is now under a spotlight. As the prosecutor makes a confession to his previous wrongdoing out of conscience, Oh Jong Tae gets sentenced to a lifetime in prison. However, Ji Hyuk’s gut feeling tingles down his back, and he starts ...

🎭 Cast of The Good Detective Season 1

Son Hyun-joo
Son Hyun-joo
Kang Do-chang
Jang Seung-jo
Jang Seung-jo
Oh Ji-hyeok
Lee Elijah
Lee Elijah
Jin Seo-kyeong
Oh Jung-se
Oh Jung-se
Oh Jong-tae
Cha Rae-hyung
Cha Rae-hyung
Kwon Jae-hong
Jung Soon-won
Jung Soon-won
Ji Man-gu
Ji Seung-hyun
Ji Seung-hyun
Yoo Jeong-seok
Kim Ji-hoon
Kim Ji-hoon
Byeon Ji-woong
Kim Myeong-jun
Kim Myeong-jun
Sim Dong-uk
Son Jong-hak
Son Jong-hak
Moon Sang-beom

📋 All Seasons of The Good Detective

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