The most thrilling and tense movie I've seen in years. Great use of the confined spaces, darkness and sound design!

It was very intense... It had a good story line

Very well done. Very suspenseful without being contrived & very tense without being cliche' ....nice claustophobic feel to the film & also a nice touch that there were no legitimate good guys in the movie.

The movie was good. Every possible thing that happened, happened. Many pop ups and kept you guessing on what/why it happened. Overall, good thriller movie to see!