Ok this is driving me nuts. I found 2 potions and I cured 2 of the 3 plague victims. However, doesn't it make sense that when I found out Dr. Elrath was poisoning them and had him arrested, that the other would be automatically cured by not receiving any more poison? I still have the quest to find Tibus a potion, but since there was only 2, am I going to fail this quest? Help! Thanks.