Just sprung to mind:
Is it actually possible to have a genuine horror-story set on the Disc? With vampires, werewolves, ghosts, boogeymen etc being known and part of everyday life, basically. Elves, Things and even Auditors might pose a threat but, but even elves aren't fully 'high octane nightmare fuel' (means -F-!I wanted to sleep the next few month actually- kind of horror)