yeah, yeah, spoiler, warning, warning...
see, when I saw the house, I thought, this is where Jude Law is going to be. But then I saw the dog and thought, maybe not. I just don't see why he wouldn't have killed the dog, except that it obviously turned out to be a pretty compliant creature, but Law wouldn't have known that. That's a little nit noid I guess, but it did seem strange to me. And, you're right, I wondered why Sullivan would think he could go to Aunt Sarah's unless he didn't realize he hadn't killed Law (forgot his character name) in the hotel room.
When the kid was hoeing the field with those farm people I knew he was going to end up there. And bringing the dog with him was a nice touch.

Good movie.