The development of the main character is done well enough, but the abrupt ending, with no conclusion, makes it an unsatisfactory story.
Perhaps those who are confident in their ability to read glances can make peace with the 50/50 chance of identifying the culprit, but the rest of us will remain baffled.
Subtlety is not bad in a movie when there's clarity brought by other factors later on; however, when the ending is too subtle, there is nothing to add to solve the mystery. So it remains a half-baked story.
Perhaps those who are confident in their ability to read glances can make peace with the 50/50 chance of identifying the culprit, but the rest of us will remain baffled.
Subtlety is not bad in a movie when there's clarity brought by other factors later on; however, when the ending is too subtle, there is nothing to add to solve the mystery. So it remains a half-baked story.