Brunil believes someone is poisoning her medicines, and she wants you to search for the culprit.
'There are so many demands upon my time, ${PLAYER}, and I cannot be everywhere that needs me! I have spoken with the Captain of the Guard, but Merenir thinks I am jumping at shadows and will not look into this matter for me. Perhaps you can be my agent in this?
'It is my duty to heal the sick, but six of those in my care have taken turns for the worse beyond all reason. It is no chance, if you want one healer's opinion: they drank of the same mixture, but where it should have helped it has only hindered!
'I think some sneak has poisoned my medicine! Some lurking foe wishes to bring down the Hall of the Gentle Hand, and cast doubt upon my own abilities! Someone is lurking within or without the Hall, and I need you to search any possible hiding-places for this villain!'
Possible hiding-places can be found both within and without the Hall of the Gentle Hand.
Brunil believes someone has poisoned her medicines and she wants you to check likely hiding-places.
Brunil can be found within the Hall of the Gentle Hand, in Imloth Melui.
Your search of possible hiding-places turned up nothing suspicious. You should return to Brunil and see if she is satisfied.