I was totally surprised at how great this film.You could feel your paranoia rise as the film went on and as you gradually learned the details of the real situation.

In truth, there is barely enough story here to make a film.

The story, direction, characters, and writing/dialogue is akin to taking a tranquilizer shot to the neck, but everything else was so well done.

The film's masterful storytelling did its job. The message was clear. No need to overdo.