Kelsin:

For Kelsin's Eyes Only:
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Since your party won't help you, I will :P. Given the fact that you figured out what you are fighting are indeed ghouls, you recall a class taken by all priests of the Caretaker to gain knowledge on some of the more common undead. You recall that ghouls are a pack of rather savage undead creature that retain some sort of intelligence after death, and it is very often that they are ruled by a 'pack leader.' In many cases, this leader is simply a more 'evolved' form of the ghoul, a ghast. However, since ghouls are - according to your class - low on the undead chain, any number of superior undead creatures such as Vampires, Lichs, Mummies, and even Bodaks could take the place of a leader. It is also not entirely possible to rule out an insane necromancer, as well.


Everyone else:

The voice does not respond to your threats, and leaves you alone in a corridor full of lifeless corpses.