Plot so thin, it passes unnoticed.

The acting is good, and the firecracker script has some excellent ideas.

There's a more than satisfactory amount of boom-boom in the movie's trim running time.

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?