"Hidden" seems to be where the plot is

Hidden is a French psychological thriller that has English subtitles. 

Released in the UK in 2006, and directed by Michael Haneke, who also directed The Piano Teacher among many other things, the film seems to have very little in the way of storyline, plot and ending.

With a very strange start the film focuses on a family receiving video tapes that just show what they have been doing in their day to day life. These tapes are then wrapped in drawings, which seem to also scare the family.

There is no real ending to the film, which leaves the audience wondering who did actually send the video tapes and although the family stop receiving the tapes and drawings, nothing appears to have actually been solved.

A weird film, that doesn't seem to be a thriller. You do have to pay attention to the film though as it is all in subtitles.