It's hard to see any effort in the film. There's no comedy to speak of, no real drama and, worst of all.

I wanted to like it more than I actually did... But much of the humor totally escaped me and I walked out only mildly impressed.

While it doesn't offer any answers, it both thrills and makes you think.

Just intense enough to provide a much-needed diversion, just lightweight enough to make you forget about it soon after it’s over. It’s not exactly “good,” per se, but it does what it sets out to do in terms of putting us on edge, which makes it … successful?