No spoilers here. I added another point to my rating because I whole heartily disagree with the low reviews. Although those looking for high tech fancy sci-fi special affects, and action packed fight scenes, (this story is not about that),they will be disappointed. What it DOES have, is some very believable acting. And although a modest setting as most of the movie is shown in a debilitated run down power facility in the future, it is believable. Most of the movie has a lot of dialogue between two characters. That in itself may turn some viewers off. But the story/pace gives little bits at a time, to build suspense, yet gives enough that the characters aren't flat/one dimensional... It is a slow burn thriller, and for a lower budget film, I thought this was excellently done. The lower ratings are not fair. I believe it IS NOT due to the QUALITY of this movie, but rather, the viewing preferences, of the viewer.