Okay, but could have been so much better

Rating: 6/10 (16 January 2017)

A woman, Michelle, is involved in a late-night car crash and knocked unconscious. When she comes to, she is a prisoner in a cell. She is in a concrete bunker deep under the farm house of Howard, who claims he saved her from the crash. Moreover, he claims that her being down here is for her own good, as the US has been attacked, using nuclear, chemical or biological weapons, and the air on the surface is not fit to breath. Michelle is deeply suspicious and thinks this is just a ruse to keep her imprisoned. She looks for ways to escape. She also discovers that there is a third person in the bunker, Emmett.
The movie had heaps of potential. Very intriguing initially - the whole crazed kidnapper vs hiding from WW3/aliens puzzle. Even when the movie went more down one of these paths I was still thinking that this was a bluff and that it really was the other.
However, was it sets off on the chosen path, there is little in the way of twists. Pretty much a linear story with a not-too-shocking revelation towards the end and some standard action scenes.
Just felt very conventional, ultimately, when it could have been something very special.