Is Lucas the Devil?

"or carry a demon seed gene"
yes, something like that, as this "evil" thing passes from Buck to Buck, generation by generation; that's why he wants a son. (But it doesn't pass simply as that to the son, it has to be developped too.)

Anyway, what I really liked in this show is that even Lucas Buck is not totally evil. He has some affection, some sincere feelings, for Gail, I think (it's not only to have a son), and for Caleb too. Also, in some times he supports the right and punishes these who are doing bad (as a sheriff is supposed to do). Well, even in the latter case, he doesn't allow anyone to defy him, egoism and power is his main motive, not support for the right, but, anyway, somehow is not totally evil. After all, Gail herself, is afraid of him, hates him, but, simultaneously, strangely is attracted by him. It's not totally black and white, there are some greys too here. Don't you think?

I don't know either, but I don't think Lucas is entirely human. In Requiem when Lucas is buried alive, then later dug up, he is fine. I know it's never specified how long Lucas is buried for, but it seems to be much longer than 5 minutes. He should have been brain dead or unconscious.

Someone's at the door

Currently watching this series, and at one point Lucas says to Merlynn that he knows what it's like to be her, because he was once. She then says that he's Fallen and he said something like he didn't Fall - he stepped down.

There was also someone who said something like "Why don't you go to Hell" and Lucas says he's already been!

I actually let out a little bit of wee....

Satan, of course, is _the_ fallen angel, so we could easily extrapolate from that. I just love that the devil is also Mr. Brady in The Brady Bunch Movie! Bwa ha ha ha ha!

The Haunted Man, by Dori Davis: Sometimes it's the living who torment the dead
Amazon.com

Buck's 'mother' told Dr Matt Buck was a channel for demonic power.