Reuben Muir’s review published on Letterboxd:
This is without doubt one of the most disturbing films I've seen in a while. And I mean that in a good way.
I had heard that the book was considered unfilmable due to it being an unreliable narrator. I may not have read the book but this is one hell of a film. I had never heard of Lynne Ramsay before but I will be sure to check her out. She has created a claustrophobic film that makes the smallest of things so intense, the montages and flashbacks she uses create mystery's for the audience to solve and keeps the suspense up and the music is unnerving and haunting. Tilda Swinton gives a career defining performance as Eva but the true praise goes to the actors who portrayed Kevin, especially Ezra Miller. Kevin is clearly a complex character and they show how demented and twisted this child is. I also feel this is an ambiguous film as you do question whether it was nature or nurture that made Kevin the way he is and you are able to question whether that happened the way Eva think it did.
This film was definitely snubbed at the 2010 Oscars and I dare any parent that thinks they have it bad to watch this film and then realise how easy they have it.