I wasn't shocked --
Seriously, DON'T click "show" if you don't like spoilers.
[HIDE]I pretty much knew by how they were handling the writing of Rita that they were going to kill her. Everybody's been complaining about the character all season, and I've seen numerous people correctly assume that she'd be written off. While Rita's always sort of nagged Dexter, they took it to an intolerable level this season, the point of which was to make the viewer wish she'd be killed, and we would somehow feel guilty for thinking that when it happened. I think a better approach would have been to actually make her more sympathetic throughout the season.
And it also sucks that what they've spent two seasons building on -- Dexter's marriage to Rita and becoming a part of her family -- was thrown away for a cheap shock.[/HIDE]
I was all around disappointed by season four. So much of it felt padded. And I've always disliked John Lithgow, so his presence certainly didn't help. I know I'll probably be criticized for trashing the Amazing Wonderful Dexter, but I just was really letdown by this season, especially after how much I liked season three.