Have you seen Fritz Lang's Secret Beyond the Door (another Joan Bennett film)? It's deeply weird.

I've heard of it! I believe it to be a Bluebeard retelling; otherwise I don't know much about it.

I'm a big fan of Bennett's, though aside from a few films, I've mostly seen her in Dark Shadows, in which she logged countless hours.

Who was she on Dark Shadows? I suspect she will always mostly look like Lucia Harper to me.