This is more like it! Sam's still around, being fairly boring, but that creepy thing that lives in the well is out and manipulating everything around her. She's a fantastic horror villain, and the frame of her clambering out of the well is the best in the series so far.

I think when it comes to character I'm most interested in motivation: why characters do things. What they're after. I don't know what the well creature wants, but it's clear that she wants something and is out to get it. Sam's far more murky for me. Perhaps it's that he's being manipulated himself, but mostly I think it's because he's flat-out crazy, and that muddies motivation and makes it less compelling for me. He feels like a puppet, and so I don't care.