[A sealed letter has been left for R.V. at the Crone.]
R.V.,
I may have the key that you are seeking. Yet, I cannot be certain even though it matches the description. I'd be more than willing to turn it over to you for a favor. Meet in Upper Sanctuary, you will be able to spot me by the green cloak that I wear. I have a place where we can speak in private without fear of being over heard.
Signed, S.M.