Although it has its amusing moments, in eneral the plot does not convince.

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

It is neither dumb nor smart enough to be fun, and spends way too much time with its boring human characters.

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?