In fact, this whole movie was depressing for me. Jackson was a jacka**, the husband was a jacka**, and the father-in-law was a jacka**. I think this movie was written by someone who doesn't like men.
The most disturbing part, of course, was Jackson's character. He's subtly threatening, and there's never enough evidence to prove he's a rotten character - just a pattern of hostility and aggression that seethes just below the surface.
Overall, it was a depressing movie,
Spoiler
except for the ending, which I found gratifying.

*And that's not easy to do!