OK, I tripped the scene where he walks away from the quaratine (sure could use a spel chequer) area, talked to him at his house (where he left and locked the door), found the key, ransacked first room, then found the poison barrels under the Inn. Now I can't find that blasted doctor! He's not at the quarentined area (been all over inside there) and he's not in the first room of his house.
Any ideas?