'Grufudh says that your friends sent medicine and furs for trade...it is good demonstration of trust, but our trust is not so easily earned. Too much dwells in this land that we do not understand...many evil spirits.
'Just last night, I was seeking a lost goat and saw what I believe was a Cuthraul, and evil spirit, floating in the air near Gwyllion's Gate. The Old Woman of the Mounatain who lives beyond that pass is a strange creature, so the sight of such a spirit was not surprising, but I fear its presence.
'Will you seek evidence that what I saw was not just my imagination? If the Cuthraul appears, will you be able to banish it? Gwyllion's Gate lies south from here. I have only seen the spirit at night.'
Some creatures can only be found at night; however, the first stage of this quest may be advanced during the day.
The Uch-luth received the gift of the Grey Company, but still do not trust you fully.
Rhiain has asked you to seek evidence of the Curhraul's presence and to banish the spirit if you may.
Rhiain asked you to banish the Cuthraul if you can.
You should return to Rhiain with tidings of your success.