You're reading this, so I assume you know something about this film. The previous reviewer spells some things out for you, plot wise, anyway.
The reason for my leaving this brief set of comments is to say: DON'T BUY THIS DVD. I don't know Koch Lorber, the DVD maker, is thinking, but the this DVD is pan and scan. So rather than glorious 1.85:1 widescreen, you get this zoomed in, muddy mess. It's not even been remastered, so often it's dark and you can't tell what's going on.
This film is about the location as much as anything else, so to lose that is awful. To add insult to injury, the trailer included as an extra IS in widescreen.... what's up with that, huh?
Koch also released Sister My Sister, another film they've butchered to 4:3.
I know you might want this because it's a decent film - but this DVD is a very poor presentation. Only buy if you're desperate - if you can wait, wait. I'm sure there's an overseas version that does it better....
You've been warned!