Today’s creepy novel, also mentioned as “horrid” in Northanger Abbey, is The Necromancer; or, The Tale of the Black Forest (1794) written by Carl Friedrich Kahlert (under pseudonym) and translated by Peter Teuthold.
Quote: “…a dreadful chilliness seized us, we felt the grasp of the icy fangs of horror, being in a burying vault surrounded by rotten coffins. Skulls and mouldered bones rattled beneath our feet, the grisly phantom of death stared in our faces from every side, with a grim, ghastly aspect. In the centre of the vault we beheld a black marble coffin, supported by a pedestal of stone, over it was suspended to the ceiling a lamp spreading a dismal, dying glimmering around.”