The lack of score maybe makes it more difficult to figure out what's going on in this film, but the clues are all there. Dawn doesn't want to face the truth about David. The performances are actually pretty incredible. The plot is a little too clever. I can see how the writer might have thought they were giving it away, but it seems most people couldn't tell after all. There were some complaints about a lot of staring, but it seemed to me that people were staring because they were slowly realizing something.
See the review from user riverwanderer9 if you really want to know what's happening plot-wise.
See the review from user riverwanderer9 if you really want to know what's happening plot-wise.