Inspector Koo or Gukyeongi is a Korean drama TV series directed by Lee Jung-Heum and starring Lee Young-ae, Kim Hye-jun, and Kim Hae-sook, alongside other cast members. The series has 12 episodes. Inspector Koo episode 12 is 66 minutes long.
Netflix describes the show as:
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 episode 12 recap contains major spoilers –
Back in the train in Inspector Koo finale, everyone is shocked that Kyung-yi’s grand plan is to let Yi-kyung catch Hyeon-tae in order to get both her and Yong Sook at the same time. Basically, Kyung-yi had thought of everything before leaking that video – so everything that has happened till now is going exactly according to her plans. Also, she was the one who “attacked” Yong Sook. The latter isn’t actually hurt and it was all a ploy to get to Yi-kyung.
Yi-kyung, after hearing all the explanations, asks Kyung-yi why she didn’t help her since they are evil people. Meanwhile. Kyung-yi has already planned for Gyeong-su to get the 20 people out of the building. He gets everyone out and as Je-hui gets there, he remembers that he hasn’t brought Seong-tae out yet. As he runs into the building to get him, Kyung-yi presses the button from this side. However, Gyeong-su saves himself and Seong-tae.
On the other hand, in Inspector Koo episode 12, an all-out gunfight breaks out as Yong Sook and the team get over there. Little difficult to understand who actually is the bad guy here. Geon-uk gets shot twice and the others aren’t too far away, it seems. Kyung-yi, however, blows up the bomb to get Yong Sook off her back. Unfortunately, though, Yi-kyung takes off with Santa, with Kyung-yi giving chase.
As paramedics get to the scene, Je-hui creates a spectacle of the badly hurt Yong Sook and an almostly dying Geon-uk whispers something in Gyeong-su’s ears. Meanwhile, Yi-kyung is walking down the train tracks with Santa and gets into a random train. Unfortunately for her, Kyung-yi is there as well. As they get to talking, Yi-kyung tells Kyung-yi that Santa is not who he seems to be.
He is constantly stuck to her to lessen his own guilt. He was responsible for Seong-u’s death. It was rumoured that the girl who drowned in the school was with someone that day of the incident. Everyone thought that it was Seong-u whereas in reality, it was Santa who was with her since he was her secret boyfriend. If he had spoken up all those years ago, maybe Seong-u would’ve been alive now.
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Still From Inspector Koo episode 12 
Still From Inspector Koo episode 12
Riddled with guilt over her husband’s death, Kyung-yi starts crying and asks Santa whether it’s true or not. Yi-kyung asks her whether she’d want her to shoot him for her. Of course, that’s not a viable option and the three get into a fight which results in Yi-kyung violently attacking the two of them. Just as Yi-kyung is about to shoot Santa, Kyung-yi opens the train door and leaps off with Yi-kyung off the train.
As the police escort her away, Yi-kyung gazes at Kyung-yi surrounded by her friends and looks almost sad. After some time, as Kyung-yi is in the hospital, Je-hui gives the police Ko-dam’s murder video and promises to give them more evidence. Yong Sook and Hyeong-tae are arrested, Seong-tae resigns from politics and Geon-uk is battling for his life, but he has Dae-ho by his side at least.
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Still From Inspector Koo episode 12
Meanwhile, in Inspector Koo episode 12, Gyeong-su, Je-hui and Kyung-yi have started their own detective agency, but they still haven’t figured out Santa’s real identity. Although, it does seem like Yi-kyung’s explanation might not be true. Kyung-yi tells him as much and says that she doesn’t care what is past was, his present is all that matters. She then asks him to join the detective agency as the team lead.
Meanwhile. Yi-kyung is in prison in Inspector Koo finale and seems to be effectively doing a bad job with her mental health. The last scene of the season is the team waiting for their first client who happens to be Lee Young-ae (the actor who plans Koo Kyung-yi).
Final Thoughts: Inspector Koo episode 12
Still From Inspector Koo episode 12
Inspector Koo finale is just so cringy. That last scene is just so silly and we learn nothing new. There are no twists that were explained or that came to light. It was just a rundown of everything we already knew. We got a lot of Santa content though, so that was pretty great.
Meanwhile, the acting was great throughout, so that was great. The series, as a whole, made very little sense. The resolutions were too quick and didn’t really flow well. To be honest, the mystery, while it was there, was supremely subpar. When the mystery ceased to exist, we went on a wild goose chase to catch both Yi-kyung and Yong Sook. While, sure, that’s neat. But it’s not a mystery and doesn’t make me wonder what can happen next. The faint glimmer of hope was Santa’s past, but they chose to keep it ambiguous.
I had hoped the series would be an interesting cat and mouse chase between the protagonist and antagonist. It turned out to be, frankly, nothing and kept everything too simple for it to qualify as a mystery or thriller. All in all, it is fine, the performances are great. The story could’ve been improved by leaps and bounds since the one that we got was quite disappointing.
Inspector Koo is streaming on Netflix.
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Mostly boring, every episode is tooooooooo loooooooong, im on eps 7, then something happens its cool, but it takes 40 minuttes to get there,
Its like a big loooong DRAMA show, too little to keep me away from the fastforward button, im gonna watch the rest REALLY FAST tonight,
My score for my wasted time: 1.5 of 5.
WORST ENDING EVER, A BOMB IN A WHEELCHAIR BUT THERE WAS NO EXPLOTION AT ALL, nobody was killed DEFENTLY NOT ANY OF THE BAD GUYS, and that horrible old lad and not the crasy girl, they all waved and smiled and had fun all the time, their laughtin made me want to pix up and axe aAND LOBE IT IN THEIR SKULL, thats should stop it i hope, they just get arrested, FUCK NOOOOO.
NEW SCORE: 0.3 OF 5. DONT EVER MAKE THIS KINDA SHIT EVER AGAIN.
CORRECTION BOMB ON THE INSPEKCTOR, have it should end wtih the train scene: the inspector somehow activetes the bomb and its starts beebing, then she grabs the crasy girl (WHO HOPFULLY ATLEAST SCREAMING WHILE FALLING OUT) The inspector turns around for a second for saying goodbye then jumps off the train too save him, he looks out the door AND THERE IS A MASSIVE EXPLOTINS BOOOOOMMM, and thats a rap, the inspector have looked like garbage througt the show anyway, why not end it in a BLAZING FIRE