I'm at the point in the Poisoned harvest quest where I have to confront Dr. Elrath about the barrels of poison I found in his rented cellar in the blue boar inn. Only I can't find him anywhere. I keep going between his house in the market area to the gates at the quarantined area in the poor sector and hes not at either of them. I have already seen him once at his house. but that was before I got this far in the poisoned harvest quest. I've also opened his door with the key but his not inside his house.