Burning artifacts

Exploration Stage: Burned-out Estate
From: Eli Montague
Description: While you guys were discussing it, I was thinking...this wall is the one that burns the most. This seems to be where the fire started. If you examine this, you'll see how the house caught fire and who did it. See. There are leaves on the window sills that were left on the fire! That could be a sign of something. Try taking that one off.
Completed: These are the leaves, thank you! The leaves on the trees that these fall from always seem to turn red. They seem to burn brighter than fire, you know? I could not for the life of me understand this phenomenon. It looks like they are burning from the inside with some kind of inner flame.