Amidst the Mill's Grist
Side quest
Toussaint suggested level 42 Blood and Wine 
On the world map
From the journal
In the vision Geralt had experienced after imbibing Resonance, he had also seen a mill. He soon reached this site and explored it thoroughly. After all, Dettlaff had recently been there himself. The witcher hoped to find clues that would lead him to the murderer.
Using his Witcher Senses, Geralt thoroughly searched the mill. It had been the property of one Count de la Croix, who had put it up for sale. And it was here that the unfortunate count had met his end, murdered in cold blood.
The witcher had found some interesting clues, yet he decided to continue the investigation elsewhere. He thus abandoned the lead he had found, related to Dettlaff's visit to the mill.
