You got to the wrong forum, this is the Beyond Divinity Forum.
Yes, you do have to go to the Catacombs, and down to the 4th level I believe to finally cure his mental problem. I am assuming that you know how to open the catacombs. The doors there are opened by levers, some quite easy to miss, and some not right next to the doors.
Search around, and do not get your pet Zombie until you know that you will not exit the dungeon for a while. I always saved getting him until the hard monsters began giving me trouble. Definately do not get him before you solve the Slasher quest for the Orcs down there.
Save frequently, there are some very tough monsters in the Catacombs.
Good Luck.
Last edited by Grim; 14/05/04 08:37 AM.