Inspector Koo

구경이 ‧ Drama ‧ 2021
Completed
FDiyF
0 people found this review helpful
Oct 2, 2025
12 of 12 episodes seen
Completed 0
Overall 8.5
Story 8.5
Acting/Cast 10
Music 9.0
Rewatch Value 6.5

Catch Me if You Can

It all started with NT Life Insurance Service’s employer Na Jaehee who was trying to collect some merit by proving a high-paying claimant case as suicide to forfeit its payment. She hired her senior in the force, ex police who was wasting her life playing videogames, Koo Kyungyi to investigate. KKY was enticed by the computer set offered by NJH, thus agreed to set out from her home and look into it. The trip that was supposed to turn a missing person case into suicide proved to harbour a more complicated story, which led them to a series of suspicious deaths that KKY believed to be perpertrated by a serial killer. As she and her team chased after this killer before they commit the next murder, they were plunged into a deeper plot that was related to KKY’s past.

Lee Young Ae looks undeniably marvelous as a woman in her 50s, they could barely hide her beauty even by making her act as a slob. Lee Young Ae definitely nailed it as the eccentric ex police inspector turned into a waste Koo Kyungyi, always dressed in colourful bright sweatpants, baggy T-shirt with loose collar due to overstretching, and oversized dark overcoat, coupled with messy, smelly hair which makes up to her unkempt appearance. She really looked like a total waste, spending all day and night drinking and playing videogames when she was not out investigating. It’s a real different look cuz i have always seen Lee Young Ae act as an elegant beauty. Despite her appearance, KKY is a very sharp investigator who literally thinks a dozen steps ahead of the criminal, even when she met her almost-match Song Yikyung, a young adult with super twisted mind whose sole purpose is to kill those who deserved it. This character is way from perfect, she can’t really fight even when her life depends on it, she is frequently physically overpowered by Song Yikyung whenever they crossed paths, and she doesnt come out unscratched from any fights. All those ‘ouching’ and ‘owwing’ whenever she strained herself physically seem so relatable to reality. She is not formidable in all aspects like most heroes in a story, but she pulls through everytime relying on pure survival instincts, clumsy as it may be.

The one who played Song Yikyung successfully embodied the total emotional wreck serial killer, who literally has no friends but those who owed to her when she killed for them. On the surface, Song Yikyung looked like a happy go lucky young woman, although lost her parents at a very young age, she was raised with all the love she could be given by her maternal Aunt. A natural loner, her aunt had always worried that she would tumble down the rabbit hole. Intelligent as she is, she proved to be KKY’s match as they keep ouwitting each other.

Somehow it is hard to see actors with poor performance in kdrama. From all that i saw (though cant say i watch many kdrama), their acting performance is always exceptional and top notch, with the only downside being the plot and the written character itself if i ever had to rate lower. The same goes to Inspector Koo. Everyone performed exceptionally well even the smallest part on screen. The songs are very catchy and kinda got stuck in my head (yeah im gonna add it to my running playlist).

One of the other thing that impressed me about kdrama is they do not have any qualm about hiring actors in late 40s or 50s as their lead cast. It’s great to see these great actors still donning the leading hat and not find them only in supporting or guest roles, especially Lee Young Ae who remained in my heart for so long after Jewel in the Palace.

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Completed
kobeno1
0 people found this review helpful
Nov 4, 2025
12 of 12 episodes seen
Completed 0
Overall 5.0
Story 5.0
Acting/Cast 9.0
Music 10
Rewatch Value 1.0
This review may contain spoilers

Somewhat Entertaining But Deeply Flawed Series!

For the first few episodes, you think you’re watching something akin to “Columbo” or “Sherlock Holmes,” as “Inspector Koo appears to have abilities similar to those two famous detectives. Unfortunately, by the end of the series, you begin to realize that she’s not even close to their level. The series leaves you scratching your head, wishing the writers had been as smart as their respective characters.

Koo Kyung Yi is an alcoholic recluse who spends all of her time drinking and playing computer games. She scarcely has time to eat or even shower, and her apartment looks like the city dump—literally! She’s hired by her friend, who represents a prestigious life insurance company.

On the other side of the coin, we have Song Yi Kyung. Never mind that her name is similar to Koo Kyung Yi. She’s a sociopath and a serial killer. Don’t ask me how a serial killer only decides to kill people who “deserve it.” This is a contradiction in terms. She’s very smart and uses a network of clients to help her; people who owe her for killing those they hired her to kill.

Last, we have Yong Sook, a matriarchal, corrupt politician who is trying to use her money and influence to get her son elected for mayor. We’re somehow supposed to fear her power and influence, as she does nothing but bark orders at cronies who quake in their boots whenever she’s around without any reason. She’s about as intimidating as a snowman.

The series is supposed to be quirky and comical, and for the most part, it is. However, when you leave realism in the dust, you end up with a series that is a complete farce and has absolutely no explanations or logic in how things occur.

At one point, Song Ki Kyung is trying to elude her captors. She jumps on a board and begins to paddle her way toward the center of the Han River as law enforcement pursues her on a power boat. She finally dives into the water. Don’t ask me how a person who dives into the middle of a river isn’t caught. After all, she has to come up for air at some point. It’s insulting how the writers and directors treat the audience as dimwits.

The final episode was so ridiculous and absurd, I’m not sure how anyone could buy it as being real and authentic. Koo Kyung Yi may be good at putting pieces together, but she’s downright dumb when it comes to anticipating what her adversaries will do and trusting those who you know is going to betray her. A six-year-old could figure things out better! It’s bad enough that she’s a former police officer who has clearly forgotten all of her skills. Aside from her detective skills, she must have been one terrible cop!

Song Yi Kyung has taken Santa hostage. Never mind that I lost count how many times he could have easily disarmed her. They climb aboard a train, only to find Koo Kyung Yi waiting for them. At one point, Song Yi Kyung takes out the magazine of the gun to check how many rounds it has. It never crosses the minds of either Santa or Koo Kyung Yi to attack, or even in those many moments when Song Yi Kyung isn’t even paying attention to Santa. The whole scene was so badly done that I thought I was suddenly thrown back into an 1980s action TV series!

It's sad when the writers attempt to showcase the intelligence of their characters without allowing for reality or the audience that they’re writing for.

There isn’t much to like about Koo Kyung Yi. In fact, I found Song Yi Kyung far more interesting as a character, even if there were times you wondered how her intelligence suddenly eluded her. For instance, she’s tucked away in a veritable prison, guarded by only an old gardener. For all of her intelligence and ability to plan and plan ahead, she suddenly can’t think of a way out.

Performances are good, even if the true villain in Yong Sook was laughable. The music is also quite good, and frankly, it was the best part about the series.

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Completed
bunny
0 people found this review helpful
Jun 4, 2023
12 of 12 episodes seen
Completed 0
Overall 10
Story 10
Acting/Cast 10
Music 10
Rewatch Value 10

WATCH IT - right now

So good- i don’t even know where to start. so many things to figure out in the plot, the plot line is so complex yet never confusing. the characters are so lovable and it really gets into the mind of the antagonist. there’s no clear good and evil and accurately represents that everyone does something wrong in the end. This drama has a good plot line and a good ending- it’s a very entertaining watch and when i tell you i was hooked i was hooked. one of the best 12 episodes i’ve watched. very solid drama an enjoyable watch and i will miss it very much.
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Completed
Brogana Sunfrog
0 people found this review helpful
Jun 28, 2025
12 of 12 episodes seen
Completed 0
Overall 9.0
Story 9.0
Acting/Cast 9.0
Music 6.0
Rewatch Value 9.0
This review may contain spoilers

Incredibly enthralling well balanced drama

This drama really challenged & pushed the boundaries of my comfort zone as I am NOT a fan of thrillers or suspense, (though I loved Healer!) I was sucked into the story before I knew what I was getting into & was glad that I gave it a chance because it's incredibly enthralling .There is a good balance of scary & non scary stuff. The actors do an amazing job !! The story is very interesting, [even though there are many deaths]
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Completed
redshoe1000
0 people found this review helpful
Jun 15, 2025
12 of 12 episodes seen
Completed 0
Overall 8.0
Story 7.0
Acting/Cast 9.5
Music 9.0
Rewatch Value 6.0

a solid watch with a surprisingly relatable lead

while we can probably all admit that the peerless Lee Youngae appears not to age, this underrated series nevertheless boasts an unashamedly un-put-together middle-aged woman as the lead? sign me up for this. add a female villain and sidekick? definitely in. this series is a pretty wild ride and diverges just enough from the usual Kdrama for its woman-centered plot to be more than window-dressing. it may not stick with you forever but it's a tantalising rollercoaster while it lasts.

overall thoughts: tropey enough to be comfortable, odd enough to be enjoyable.
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Completed
scenophile
0 people found this review helpful
Jul 27, 2022
12 of 12 episodes seen
Completed 0
Overall 6.0
Story 6.0
Acting/Cast 6.0
Music 7.0
Rewatch Value 5.0

Exciting but gets a little messy

The best part of this drama is hands down the antagonist, who is just the most intriguing kind of serial killer. We get a backstory showing her how she got to that point and what she's feeling (or what she's not), and I really loved the layer of moral grayness in her reasoning behind the killings. It really made me question the blurry line between right and wrong and think about who has the power or right to decide who deserves to die and who to live.

All this, paired with the eccentricity of the female lead who has her own blurry backstory, made for a really interesting dynamic between the two not only when they were playing their game of cat and mouse, but also during their very intense confrontations.

I thought the side characters on the team were also great and had their personalities and roles, each with a different worldview that meshed well together.

As the plot progressed, it started to incorporate other antagonists and manipulators that were related to politics or familial secrets; while I'm not necessarily surprised because I knew the story had to get bigger than a single killer and her accomplice, but I just felt like the additions started to get messy and I was not at all as interested in these other people with other motivations. It just felt too common and it seemed to stifle the potential of the main antagonist.

Though there were some parts that felt a little rushed — especially in light of all the new antagonists and characters that were added that I mentioned above, I still felt like the drama wrapped up the storylines nicely.

Throughout the entire show, the OST was great and it definitely made me feel the intensity in every scene.

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Completed
PrincessAlycee
1 people found this review helpful
Mar 19, 2022
12 of 12 episodes seen
Completed 0
Overall 9.0
Story 8.0
Acting/Cast 8.0
Music 9.5
Rewatch Value 5.5
This review may contain spoilers

Interesting and funny

Honestly I didn’t think I would like this drama that much. I started with low expectations and had a pleasant surprise.

It was pretty funny and some scenes were unexpected like the first encounter with K when she was hiding after not showing up at the airport. I didn’t expect inspector koo to be in so bad shape.

Also, the acting of the actress playing k was questionable, overall I didn’t think she was good.

There are still a few unresolved plots so I still hope for season 2
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Completed
pramilaaaa
1 people found this review helpful
Jan 15, 2022
12 of 12 episodes seen
Completed 0
Overall 8.5
Story 8.5
Acting/Cast 8.5
Music 7.5
Rewatch Value 7.0

enjoyed it!

Loved seeing the women helm this drama. It was equal parts funny and thrilling. K was a charming criminal. Ms Koo made a fun anti-hero. All the other side characters were amazing too. Really wonderful seeing a same-sex couple with a cute romance.

I'm just being very superficial with my review here. Because there's more to this drama than what I've typed above. At 12 episodes, it is nicely packaged. Couldn't grasp many things - one of which is how come K can beat up everyone's ass and she is just a petite young woman who doesn't appear to be trained in any form of martial arts? But it was fun enough that I was happy to suspend my disbelief.

With how the story ended, I suspect a sequel may be in the works? Nice.

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Dropped 5/12
cry0nic
3 people found this review helpful
Jan 14, 2022
5 of 12 episodes seen
Dropped 0
Overall 6.0
Story 8.0
Acting/Cast 5.0
Music 8.0
Rewatch Value 3.0
This review may contain spoilers

Killing Eve ripoff gone wrong

This show was touted as a Korean remake of Killing Eve and well, it isn't wrong. If you've watched Killing Eve, the similarities are there: female police officer/law enforcement agent goes on a cat and mouse chase with a female serial killer/assassin (in killing eve). This show takes on a more quirky/light hearted tone compared to Killing eve, which in my opinion doesn't work in its favor. "K" the female serial killer, is basically Villanelle but quirkier and less charismatic. Her "quirkiness" was played up too much it made it too over the top and unbelievable. This was actually the main reason I dropped the show. K's overacting was just grating on my nerves too much. The plot was also not sufficiently interesting to get me hooked on the show and make me able to look past the awful overacting. Koo and team already established that K was the killer around ep 4/5 so there wasn't anything left to compel me to continue. Also, the people who K was targeting were bad people, so it was kinda a good thing as well? I personally like a good revenge story so I didn't care to see K get apprehended. There was also some backstory about Koo's husband's suicide but it was meh.

Other plot points I couldn't stand was that I found it hard to believe that K had so much resources to carry out her various killings, especially the plan where she drugged Koo's 2 team mates and left them to die at sea. Villanelle had some outlandish schemes up her sleeve as well but she was an assassin part of an international organization. While K on the other hand seems decently well off with her aunt being some sort of insurance agent but definitely not chaebol level to have the means to pull off such stunts.

Acting wise: Lee Young Ae is decent as Koo but her performance did not wow me. K's actress on the other hand....ugh. Not sure if it was a production choice to have her overact and turn on her "quirkiness" meter to a million or maybe the actress' acting ability isn't up to standard to be able to portray the character convincingly.

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Completed
sapphicdisaster
1 people found this review helpful
Dec 26, 2021
12 of 12 episodes seen
Completed 0
Overall 9.5
Story 9.0
Acting/Cast 9.0
Music 10
Rewatch Value 10

Deadly charming

Gosh, what a show! It‘s been a while since I was this charmed by a drama but this did it for me.
What can I say, I love everything about Inspector Koo, even its flaws, which I would argue, make this even more endearing. Yeah, it’s riddled with plot holes and conveniences, yeah, the performance Mrs. Koo gives, is a bit strange and over the top, but man, that’s all part of the experience baby!
I am struggling, trying to take this show apart, and truly critiquing it because, for the first time in a long time, I was too entertained to pay attention to the details.
In no way is this a realistic crime thriller, but I don’t think it has to or even tries to be one. Somehow this show managed to be intelligent while having the most Ludacris plot ever. Inspector Koo definitely knows its strengths and you will catch yourself suspending your disbelief to new extremes simply because you’re too hooked to do anything else.

How refreshing to see a K-drama that is truly driven by its women. Female competence all around. Inspector Koo is a quirky anti-hero that you cannot help but fall in love with and Na Ja-hee is one of the coolest women of K-drama in 2021. But I especially lost my heart to psychopath and dream-girl K. Most people probably already know her from Kingdom but the only drama I saw her actress in before this, was some sleazy lesbian-fanservice 5 minute-episode web show. But man, she did such a fantastic job here! I was having fun whenever we got to see K on screen. No matter how deranged or downright evil she was acting, it was nearly impossible for me to hate her, that’s how much I enjoyed her performance here.

However, the biggest strength of Inspector Koo is its distinctive cinematography and cut. This is a drama that stands out because of its style. From opening to its montages, this show felt fresh, interesting and most of all: charming. Never did this drama go the easy route of conveying something, even simple scenes of people casually talking to each other were visually stimulating, thanks to the quirky look and feel of Inspector Koo. I was strongly reminded of the cinematography of Scott Pilgrim Vs- The World, which I love. The color and quick cut took the edge of the dark premise of the show and made this thriller fun without making the gruesome crimes of K feel trivial.

The OST is SO DAMN GOOD!!! I am not someone that cares for K-drama soundtracks or even K-pop, not at all, but I’ve been listening to the OST non-stop ever since I watched the first episode. It’s so catchy but never felt out of place. I found myself grinning ear to ear every time Round And Round by TRRP came on.

Inspector Koo is a silly drama, but it’s not a stupid one. I would somewhat compare this dark comedy with Vincenzo, which I also truly loved, but Vincenzo was a show that felt like dumb fun, with not much else going on. And that is not a dig at Vincenzo, I adore that show. But with Inspector Koo, I think there was more method to the madness and yet it doesn’t feel like it tried as hard. Amidst all the weirdness, there is something genuinely poignant and important about this drama. What is good, what is evil? And what should judgment look like, when those two ideas start to blur more and more?

I strongly strongly endorse this drama, I would even go as far and call this my personal K-Drama of 2021. The 8.2 does not do this show any justice, this is criminally underrated, in my humble opinion. Yeah it has its flaws, Inspector Koo‘s acting, as mentioned above, the plot holes, and at certain points, the plot was kind of slow and repetitive. I might be overly generous, I will gladly admit that, but no matter how hard I try to be objective, I just can’t stress enough how much fun this drama really was. TLDR: I think Inspector Koo is absolutely brilliant.

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Completed
Eric
1 people found this review helpful
Dec 13, 2021
12 of 12 episodes seen
Completed 0
Overall 9.0
Story 9.5
Acting/Cast 10
Music 10
Rewatch Value 9.0

A Witty and Brilliant Conflict Between Fantastic Characters

This is a detective's show in its finest form. Unique and interesting characters brought together in a game of cat and mouse between a disheveled but gifted detective and an equally intelligent antagonist. The story was phenomenal, the acting was great, the music was catchy and well-made, and the production quality was perfect.

Besides being a little drawn out, there isn't much I can criticize (that's why it's nine out of ten). And... well, there's not much to say about a great show except that it's great, so we'll leave it at that. I strongly recommend watching this show.

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Completed
bonnie_bonomi
1 people found this review helpful
Dec 13, 2021
12 of 12 episodes seen
Completed 0
Overall 10
Story 9.5
Acting/Cast 10
Music 10
Rewatch Value 9.0
This review may contain spoilers

Finally a kdrama where I loved every aspect of it

This is my first review, so I am sorry if it seems all over the place.

In the kdramas I have watched over the years Inspector Koo is without a shadow of a doubt one of my favorites. So rarely I find kdramas where I loved every thing but Inspector Koo managed to do it.

I didn't have much expectations when I started watching it and in the beginning I honestly watched it because the plot seemed interesting and because I saw Lee Hongnae and Kim Hyejoon were acting in it. But once I started watching I was surprised because it was much more fun and interesting than I was expecting.

It's funny but at the same time it tackles serious crimes and situations. The characters are well done and they are given depth. The OST is amazing too, I don't think I have ever had a kdrama where I liked every single song in the BG but in Inspector Koo the music really fits the atmosphere and the situation.

The actors did all an amazing job, and I ended up liking and sometimes hating every single character.

Another thing that I really liked about Inspector Koo was the editing. It was on point! My favourite parts are when Ko Kyungi and Song Yikyung met for the first time in the highschool and until then you thought that Kyungi was in the far past, but then the coloring from purple/greish became normal and you saw the two main leads looking at each other. Something else that I really liked in the direction of the drama was all the parallels between the two FLs, like for example when they were looking at each other at the elevator reminded me of when they looked at each other in the class room when they were sitting at the desks. Also the directing of the last episode when K was in the place of other characters while Ko Kyungi was explaining how she managed to be in place of Ms. Yong.

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Inspector Koo poster

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  • Score: 8.1 (scored by 8,110 users)
  • Ranked: #1912
  • Popularity: #1130
  • Watchers: 20,971

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