Basically, after a systems failure a ship gets trapped upon the dark side of the moon, where all kinds of weird goings on begin to take place as slowly the crew members are picked off one by one by an unseen assailant/assailants.
The actual film idea itself is excellent and it really does use darkness in the film for the right reasons and as always, desolate space ships make excellent places for horror to hide round every unlit little corner. Add the fact that there is nowhere to run and the horrible feeling of claustrophobia and you have a gem of a move that is slick, doesn’t seem over-produced and has a genius idea of a story running through its core.
It is nice to see a film made to scare and not to shock.