This quest is not available in game.
Kill 8 Wailing Ancestors and 8 Rotting Ancestors.
Kill Captain Dargol, and bring his skull to Magistrate Sevren in Brill.
The Agamand Mills area has become a foothold for the Scourge. Their strongest point is the Agamand Family Crypt where their local military leader, a skeleton named Captain Dargol, has headquartered. With Necromancy he has raised the ancestors of the Agamands and plans to use them against us.
This cannot pass, and you must stop it. Travel to the Agamand Family Crypt and defeat the raised Agamand ancestors.
And, bring me the skull of Captain Dargol.