Limited series · JTBC
Inspector Koo
A never-before-seen inspector.
Who's in it
Cast
The principal ensemble across the run of the series.
Lee Young-ae
Koo Kyung-yi
12 eps
Kim Hye-jun
Song Yi-kyung / "K"
12 eps
Kim Hae-sook
Director Yong
12 eps
Kwak Sun-young
Na Je-hui
12 eps
Baek Sung-chul
Santa
12 eps
Cho Hyun-chul
Oh Gyeong-su
12 eps
Lee Hong-nae
An Geon-uk
12 eps
Bae Hae-seon
Jung Jeong-yeon
6 eps
Choi Young-jun
Jang Seong-u
6 eps
Kim Kang-hyun
Kim Min-gyu
5 eps
Park Ye-yeong
Yoon Jae-yeong
4 eps
Jeong Seok-yong
Mr. Kim
11 eps
Park Ji-bin
Heo Hyeon-tae
6 eps
Jeong Jong-jun
Je-hui's father
9 eps
Park Kang-seop
Lee Dae-ho
8 eps
Choi Dae-chul
Heo Seong-tae
6 eps
Kim Soo-ro
Ko Dam
4 eps
Kim Ki-cheon
Gardener
2 eps
Park Ye-ni
Yi-kyung's mother
1 eps
Jeong Yoon-hee
Na Je-Hui's Colleague (Eps 8)
1 eps
Han Seung-yoon
[Policeman]
1 eps
Jeon Seok-chan
[Detective]
2 eps
Ahn Ryeo-jin
Escort (Eps 1, 2)
2 eps
The Nutevio profile
TV DNA
How Inspector Koo actually feels to watch, measured on the traits our editors track across every series.
Signature profile
Inspector Koo reads strongest on Bingeability, Serialized and Tension.
How hard it is to stop after one episode.
How much each hour depends on the one before it.
The sustained pressure the series keeps you under.
How fully written and psychologically layered the ensemble is.
How often an episode ends on a hook you can't ignore.
How often the series is genuinely funny, by design.
Visual ambition — scale, craft and set-piece filmmaking.
How much the series is designed to affect you.
The scale, internal logic and texture of the world.
The story
What it's about
A reclusive ex-cop reenters the game as an insurance investigator, searching for clues in crime scenes perfectly staged by a serial killer in her midst.
Recently aired
Latest Episodes
Behind the series
Created by
Showrunners, creators, executive producers and the writers who set the voice of the series.
The craft
Key Crew
Directing, writing, production, camera, music and editing.
Where to watch
Streaming
Availability verified against regional listings.
- NetflixStreaming
- Netflix Standard with AdsStreaming
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Where to go from here
Watch Next
Our editors' suggestion for the show you should start tonight — and why.
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Watch this next if you like protagonists you can't quite defend.
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Never stop watching
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