If you loved Twixt, try Dementia 13
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Francis Ford Coppola, and they both carry the dread mood tag, and they sit in Horror / Mystery territory. If that's the register that drew you to Twixt, the second film will land in a comparable space — through a different lens.
dread
What Dementia 13 is
Foggy Irish countryside autumn darkness falls on a crumbling mansion door Scheming widow plots inheritance amidst lurking axe murderer Coppola's early work foreshadows his later suspense.

