does this help?
Chateau:
Get Jean Aimé's key to his office:
Before going through the drawbridge, get clay from the bin on the ground.
Go to the chapel of the chateau and change to Cesar, unless you have changed earlier.
Go upstairs and click on Jean Aimé's door.
Go back down to the scriptorium and see Jean Aimé. Talk to Jean Aimé.
Go to the chapel of the chateau and change to Madeleine.
Talk to Jean Aimé as Madeleine. While his back is turned to look at the books, take the clay from inventory and use it on the key beside him to get key impression.
Go to the scribe sitting on the drawing desk by the window and talk to him