Pretty good atmospheric Svengoolie entry with a large cast (Bela Lugosi has but a supporting role). Rather high death toll for a 1940s film, I think, though the ultimate mystery is not a big payoff (endings in these films often a bit weak). Janet Shaw is good as a doomed servant. Very snarky. Mets won in extras so went OT (it's on at 10), but taped it.