After taking the quest, Zenwa will offer to transport the entire party to Fahranur, after accepting, Mutu (a level 15 warrior) will be located a short way to the west. The path to the inheritance involves wading through hordes of undead. Bring weapons and spells to deal out holy damage to prepare. As for the path, just keep following the wall on the right, as it loops around. Kill the wraith to open the door to the inheritance.