...but the friggin' bugger is dead
Yes, a strange thing happened yestereve...
I reloaded my last savegame in Durlag's Tower Dungeon level 2, and saw to my great surprise that the info screen showed: "Kiel the Legion Killer casts Cure Light Wounds".
"Strange", I thought, because I had cleaned the level before saving last time.
After a time, I was visited by Kiel the Legion Killer... Not ONE, but TWO!
And placing the cursor over them showed:
"Kiel the Legion Killer - DEAD"
Still, they cast Cure Light Wounds en masse, and then attacked me... And, as I suspected, I could not harm them... So, I had to resort to CTRL+Y to ... disable... them.
I guess this might be an error that a mod has introduced, but I don't think that the area script has been changed... Will delve further into this when I get home from work today.
Which reminds me... I should be working right now.