Hey. After killing the rathound king with Edgar, I returned to Hathor only to find him dead behind his desk. He was barely alive when we parted ways so I guess he died from poison or bled out.
However a) the poison/bleeding should have killed him on his way back and b) wouldn't he have done something about it anyway? I had antidotes on me for chrissake, so this doesn't strike me as a likely cause of death. Not going to complain though, it was kind of funny
Cheers
PS. The 'approaching the rat king' cutscene is a bit buggy. On two occasions I entered his 'throne room' and did not see him or the ancient rat hound until I moved. Another time the game soft locked, the dialog window was open but I could not interact with it.
