Since it seems we are not using bug reporting figured I would post it here.
I noticed doom knights are neither living or undead you cant turn em and if you cast healing on em they get healed but the odd thing is if you cast harm they get healed also.
very minor bug but one i thought worth mentioning.
Doom knights
There may be a bug with the Healing/Harming (since I've noticed other enemies with the same affliction, namely the good ol' Unknown Evil), but despite that bug the Doom Knights are still undead. You might not be able to turn them when you think you could due to the modifications NS4 has done to turning, but you'll be able to damage/kill them with Undeath to Death, control them with Control Undead, or affect them with other such spells geared towards the Living Impaired. Since I'm guessing you're talking about fighting them with your Cleric, try U2D and you'll do much better than trying to heal them, anyways 

~DM Yonwe
Lolth - Goddess of the Drow
Velsharoon - God of Undeath
Lolth - Goddess of the Drow
Velsharoon - God of Undeath