Robert Westall on the Wireless
Robert Westall's 1991 novella, 'The Stones of Muncaster Cathedral', is a pretty neat modern Gothic tale of a steeplejack repairing the eponymous (fictional) edifice. He becomes a bit fixated on an evil-looking gargoyle and it emerges that the thing is linked to sorcery and a hidden chamber in the structure. It's well-worth reading, but if you like radio drama you can hear an adaptation made by the BBC here.
Comments
The premise reminds me a bit of a character who helps the mc in 'FutureTrack 5' - a tough, if rather sinister scot who suffered a series of setbacks before seeing a face in the grainy surface of a wardrobe* and with which he becomes obsessed. He paints what he sees and from that point on his life changes for the better. He keeps the painting in his office. It is not a nice face, and the implication is that he has made an unspoken deal with the devil. This story is all the more effective for being peripheral to the main story, and because it's ambiguous. The character may only think he's made a deal with the devil: Westall seems to be implying that this comes to pretty much the same thing.
* or at least, as far as I can recall. It was a long time ago.