If you've seen the trailer for this then you'll no doubt be expecting a tense alien invasion movie, with a hugely interesting take on how people survive this apocalypse while blindfolded the entire movie.

Well, this is not that film. I won't spoil anything for you but I do urge you to lower your expectations.

It's just an ok thriller where the "big twist" at the end is simply the question you were asking all of the way through the film.