Michael Cantrell’s review published on Letterboxd:
Frick. That single word was uttered from my lips countless times throughout the duration of this movie. This is the most painful movie to watch I have ever seen, for more reasons than one. Yes, it is probably the most violent (dare I say "grisly") movie I have seen to date, but it is more emotional than most movies I have seen as well.
In my opinion, the first and final act are by FAR the strongest. I can't decide if I think this movie goes on too long. It certainly is a revenge epic, but a lot of the stuff that happens in the middle doesn't really add up to much in the grand scheme of things... then again... everything that happens throughout the middle is a huge build-up to the emotional punch to the gut of the ending. Holy crap.
So I think it is safe to say I am torn about this movie. I don't want to say I "love" this movie, and I definitely wouldn't say I would recommend it to anyone... ever... but it is one of the most impactful, gut-wrenching, compelling movies I have seen in a long time. The conflict between the main character and the villain, as well as the inner conflict within the main character himself both build so much emotional that it is overwhelming. A lot of the dialogue that happens towards the end of the film speaks for itself, so there isn't much of a point in going into themes. Thus, I'm just gonna end it here. Don't watch I Saw the Devil. I certainly don't think I ever want to watch it again.
Sentence: The last shot of this movie is probably one of my favorite shots in cinema.