Although a little late, there’s a horror based module for your use if you’d like it and it can be found here.
Here’s a little snippet:
This island was once the hold of a dwarven runesmith and his family. Given his skill and talent, the smith had his own forge and foundry, along with a small village of his clan that had come to join him. The smith chose this island both for its reclusive locale and its abundant natural resources. The island is the tip of a long-dormant volcano, and not far below the surface are ferrous ores rich in the minerals the runesmith needed for his crafts.
The smith lived and prospered here for over two hundred years. On the eve of their two hundredth year celebration, the runesmith’s wife fell from the keeps parapets and died. Over the next weeks and months, the runesmith called in all of his favors with local lords and kings who had benefited from the dwarf’s quality wares. Priests and arcanists were shipped in from lands as far away as the green coast (which, at the time, was the property of the black kings). Unfortunately, no form of resurrection seemed to work, and as time drew on, the runesmith became more and more obsessed and deranged. Many of his clan attempted to bring him to reason, but being dwarves, they had no choice but to trust in and honor their quickly degenerating lord. Then, exactly one year after the accident, the entire keep’s contact with the outside world cut off. Not long after, when ships arrived to restock the dwarves’ supplies, they found nothing but old bones, decrepit and brittle with extreme age.
