From CJEntertainment's Youtube channel that I just found, here is the english trailer for "The Crucible". They are using the title "Silenced" here, however.
Not the best quality subtitles for an official foreign trailer, but still. For this movie, the point gets across even without subs. A good trailer should do that.
I have some other news concerning the movie (somehow) that you might have already seen, but here it is anyway.
Ex-teacher accuses 'Dogani' school of murdering students