Cello

Cello is an atmospheric, emotionally-driven psychological horror/drama from South Korea. It's basically about a woman with traumatic events in her past that come back to haunt her and her family. 

I call it a horror/drama because it has its frightening moments, but a large part of the movie is devoted to the relationships between the main character, Mi-ju and her autistic daughter, and the past relationship of Mi-ju and her very close friend, Tae-Yeon. I found myself caring a lot more about the characters (and any potential danger to them) in Cello more than I usually do in horror movies, because so much time was devoted to developing them as people and not just kill-fodder. There are so truly horrifying moments in this movie, which gives it a heft and impact that goes beyond just visceral thrills. Cello is a very sad film, and that wouldn't have worked at all without characters that you actually care about.

It's not hard to figure out what's going on with the story, as Mi-ju seeming falls prey to either a malevolent ghostly presence or her own crumbling mind, but fortunately the plot throws enough curves to keep even veterans of the genre from being able to predict everything that's going to happen. 

Put plainly, I liked Cello. It was somewhat different from the recent horror movies I've seen, and undeniably well-made. I recommend it.