Who are you?

[Nina]

Director: Pakpoom Wongjinda

Genres: Horror
Country: Thailand
Language: Thai (English Subtitles)

Plot: Nida (Sinjai Plengpanich) is a single mother who takes care of her anti-social son who has locked himself in his room for five years. The only way to communicate with her son is to write on a piece of paper and slip it under the door. But, when outsiders start to get curious about what is going on behind the door of her son's room, a series of terrible events starts to happen.

http://www.youtube.com/watch?v=GQCtXY1q_oo

Scary, crazy and very sad. Kudos for Thai cinema.