Did you pick up the meat on the table? I didn't see Dorian near his house until after I had looted the cellar and went back outside, so it is possible he may not be dead (if he is, there is still a way to get him back).
Reviving dead NPCs (don't know if this has been tried with the download version, but I'd expect it to work)
Check your messages (click 'My Stuff' in the top menu bar, then 'My Messages').
