I was wondering about how many windows were in Regan’s room? I only see one main window where it leads to the Hitchcock stairs, but when Father Merrin approaches in the cab, we are to assume that bright light is coming from Regan’s room from the front of the house. But during the exorcism scenes, there’s no proof of other windows in that room, except for the main window that Karras leaps through and Burke was killed and thrown out. Your thoughts.