My first idea is one inspired by the Camelot Mythology and in particular a scene from the movie Excalibur. Huzzah! Its of a quest knight coming upon a tree that Mordred has used to display the corpses of the knights he had slain. The villain!, this would be a forest scene under full moon light, maybe its visible in the scene, the Knight, on horseback is holding aloft a torch revealing the grizzly scene, as the bodies are hung in the tree broken and contorted. I thought perhaps there could be a menacing character hidden in the tree branches or something as well.
Light sources would be the Moon, the torch and I wanted another light perhaps from a nearby pond? too Hokey? or just Hokey enough?
here are some reference pics



