There is a problem with cults in Korea so it's a believable premise. But the way the events unfolded felt like those Lifetime Television thrillers Wrong this and Wrong that which feature lots of missing children who come back later but turn out to by psychos. It felt slightly too much and formulaic. The cliched ending could have explained their methods a bit better. Kim Mu Yeol is quite good as the father. The actress Song Ji Hyo looks to off from the beginning with her evil stare. Even the house looked like a McMansion.

Not a must watch unless you feel like a Korean version of a LMN type psycho thriller.

Intruder was a somewhat solid film that had some interesting idea and premise but it was also a film that used its potential to a full way like it had potential for it.Characters are fine but i lacked emotional impact to connect with them and that was a sort of a problem for me.Story also if it was cool and interesting ,it still lacked a far bigger impact that would effect me in a great sort of ways.Story and script were done in a good way,expecly script and acting made that thing just a lot better.Intruder is a proof that not every Korean film is masterpiece but it had some fine moments

When a woman, Yoo-jin (Ji-Hyo Song),comes into Seo-jin's (Mu-Yeol Kim) life claiming to be his long lost sister, he becomes suspicious of her claims and true intentions with his family.

This film has both good and bad moments. Let's start with the bad.

There is a vague setup for the film and not enough individual character building. We just aren't given enough reason to care about what is happening with the characters to truly invest in whatever outcome awaits. The way the story has been setup lacks a direction for cause of doubt and it seems a bit rushed.

What I believe the film had going for it was a nice atmosphere. It was very tense even without having all the character building. It is what pushes the film forward. Also the acting was rather good.

I recognized Ji-Hyo Song from Wishing Stairs (2003),the third film from the Whispering Corridors series and I thought she did a great playing subtle nefariousness in her role. I recognized Mu-Yeol Kim from Forgotten (2017) and although he played his part well, he was overshadowed greatly by Ji-Hyo Song.

As far as the twist is concerned, some will like it because it is such a drastic twist while others will look at the screen sideways. It will come down to how you personally feel about it. I thought it was interesting but a bit lackluster. I personally wanted to see something with a bit more punch to it.

Overall the film held my attention but it wasn't the fast paced, intense thriller that I've come to expect from South Korea. Just a bit disappointed but still a decent watch.