A never-before-seen inspector.
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.
Inspector Koo (2021) is a action & adventure, comedy, drama, mystery and crime series that premiered on October 30, 2021, spanning 1 season and 12 episodes. It stars Lee Young-ae, Kim Hye-jun, Kim Hae-sook and Kwak Sun-young. Viewers rate it 7.4 out of 10 across 161 ratings.
Watch the official trailer for Inspector Koo before you start streaming.
Official trailers, teasers, clips and featurettes for Inspector Koo.
Trailer
Trailer
Lee Young-ae
as Koo Kyung-yi
Kim Hye-jun
as Song Yi-kyung / "K"
Kim Hae-sook
as Director Yong
Kwak Sun-young
as Na Je-hui
Baek Sung-chul
as Santa
Cho Hyun-chul
as Oh Gyeong-su
Lee Hong-nae
as An Geon-uk
Average viewer score of 7.4/10 from 161 ratings.
I really appreciate its style but the plot was sacrificing way too much in favor of its supposed black comedy. Sure the drama had its high moments where the comedy really shined but the endless 12 episodes chase was exhausting and poorly executed. At least there's more to like about it, the drama had a good selection of soundtracks that amplified its stylistic moments. I wish this drama was a movie, it would have…
Reviewed on September 25, 2023
You don't get too many korean shows with a cool and clever female lead. Inspector Koo is one of this rare diamonds where a women isn't just the female love interest. I really would love to watch a second season. There is crime and murder and a bit of nerdy stuff. I enjoyed it a lot.
Reviewed on May 12, 2026
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Inspector Koo (2021) is available to stream on Netflix and Netflix Standard with Ads. Availability comes from JustWatch data and varies by country.
Inspector Koo has 1 season and 12 episodes in total, starting from its premiere on October 30, 2021.
No. Inspector Koo is marked as ended, with the final episode airing on December 12, 2021.
Inspector Koo (2021) stars Lee Young-ae, Kim Hye-jun, Kim Hae-sook, Kwak Sun-young and Baek Sung-chul. The full cast list with character names is available in the cast section of this page.
Inspector Koo (2021) is rated 7.4 out of 10 from 161 viewer votes, and suits viewers who like action & adventure, comedy and drama series. Reviews from viewers are collected further down this page.
The official Inspector Koo trailer is embedded in the trailer section of this page and plays instantly in your browser.
