Not all who occupy Garth Agarwen are given over to corruption. Some are taken from their homes or the sites where they worked and brought to the ruins where they are enchanted and taught a new way of thought through foul magic. The Créoth warlord, Dúnlang, is possessed of the gifts of Angmar and captures members of the Eglain to corrupt and turn into mindless minions of the Red-maid.
Dúnlang was given the power to enslave weaker minds, and many of the Eglain have gone missing over the years. He makes his home deep within the ruins of the Garth Agarwen Fortress and is in the process of converting members of the Eglain into devoted members of the Créoth clan. You should save them from the influence of this man, but not harm them in the process.