From Diablo Wiki
Dialogue that becomes available at various points through all the acts. To hear the dialogue you click the NPC and select Talk.
The Burning Bodies
The dead have been a bane on our existence since that cursed fire fell. We have to burn them just to make sure they don't rise from the grave.
Leah and Cain
- Witch Doctor: What do you know of Leah and her uncle?
Not too much, I'm afraid. They cam here almost a year ago. She split her time between looking after him and helping out the town. He spent his days in the old cathedral, looking for old texts, from what I hear. They were inside when that thing hit. She's lucky to be alive.