Good start, but then it gets ruined

it is the rare 'crazy' movie that actually has something to say.

Go in cold, and you're likely to emerge with your blood boiling. This has to be seen to be believed.

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?