Took me a while to get around to watching this one despite hearing good things about it. It's a Thai horror film with a healthy dose of what you'd expect from Asian horror (long haired ghosts of aggreived girls scaring people to their deaths) though I enjoyed it, and (this doesn't happen often) was genuinly creeped out by this movie.
The subtitles shouldn't present too many problems as the film is quite light on the dialogue and not exactly complicated. Scary film, worth watching.
http://www.imdb.com/title/tt0440803/A young photographer Thun and his girlfriend Jane discover mysterious shadows in their photographs after fleeing the sceen of an accident. As they investigate the phenomenon, they find other photographs contain similar supernatural images, that Thun's best friends are being haunted as well, and Jane discovers that her boyfriend has not told her everything. It soon becomes clear that you can not escape your past.