The premise is good: a girl wakes up, tied up in a room full of other girls who have also been kidnapped. She's the only one who's conscious, and a killer is dragging them off to die one by one.
But then the movie tangents into some guy and his problems, and although the two stories ultimately merge together after jumping from one to the other, his entire tale is slow-moving enough to sap the energy out of this film almost entirely.
Meanwhile, our heroine is the kind of person who does some smart things... but who fails to think of so many obvious ways to try to help herself that the bad writing kills any sense that she's actually intelligent.
Also, the film-makers seem to have such a lack of understanding of basic physics (not to mention how ventilation shafts work), that it kills a lot of the suspense that they're trying to build, putting a final nail into the coffin of this movie.
While there are some decent moments, I would not watch this film again, and I'd really like to have back the time that I invested in it. If you're bored, and not looking for anything really good, give this one a go... but only if there's nothing else on.
