Kathryn Bigelow did this, which stands to reason has to be pretty good. She has yet to make a movie that is unwatchable, and in the 1990s she hit her stride.

And you can tell it was Bigelow, because Silver actually had a decent performance and Curtis shows her dramatic credentials and proves she is more than just a scream queen... but more importantly Ron Silver does a good job and I've only seen him deliver meh at best.

But in the end, you still have to take it for what it is, a tense thriller like so many others you have seen before, but a tense thriller with some real class behind it that throws out some seriously great performances, anxiety inducing tension, and lighting that is surprisingly naturalistic for a cheap thriller.

With any other director this might have been a bad movie, but Bigelow really delivers.