It's a wonderfully Gothic kind of story that makes me wonder why we haven't heard more about Hume Nisbet. Turns out he was a really interesting guy. He was an artist and a poet who also wrote books on art in addition to lots and lots of ghost stories. He also wrote a fair number of romances.His paintings are all quite moody--his most famous is probably "the Flying Dutchman," and are full of clouds and fogs and so forth.
I really enjoyed this short story and think you will too.