This quest is not available in game.
Kill Valdred Moray.
Bring his hands to Raleigh Andrean in the Undercity.
Valdred, once my good friend, was my wife's murderer. Although I am incapable of grieving, I do yearn for revenge. If you kill Valdred and bring me his cursed hands, then I will reward you.
I last heard he was at the Greymane Wall in southern Silverpine, trying to flee into the kingdom of Gilneas.