- Yahar'gul, Unseen Village, inside a caged room right before the Yahar'gul Chapel. To reach it, players must drop down into a platform, from where all the Hemwick Grave Women are, facing the Amygdala. There will be a fault on right side of the rails that allows players to drop down.
The Upper Cathedral Key is required to gain access to the Upper Cathedral Ward.
- The key is picked from a Choir member tied to a chair, inside a cage in Yahar'gul, Unseen Village. This could mean the Choir and Mensis became hostile to one another.