http://www.youtube.com/watch?v=agbAOSPP-bc (The scene is from 1:30-4:50)
This movie has a lot of really interesting work in it, I would definitely recommend it (even if you don’t like it, it’s worth seeing.) The basic premise of the movie is that a young girl befriends a bed-ridden man while staying in a hospital after breaking her arm and he entertains her with a fantastical story, which he begins to use to manipulate her into stealing morphine for him.
The lighting in this scene was done very particularly. Roy is trying to convince Alexandria to steal morphine from his neighbor’s cabinet. Alexandria is uncomfortable with the idea, sensing that it is wrong, but trusts Roy and wants him to continue the story. Roy’s face, representing the voice of “evil” is practically obscured in darkness, making him seem shady and sinister. Alexandria, representing innocence and purity is cast in direct light from the window. Her costume of all white makes her look almost angelic. They are sitting on opposite sides of the frame facing each other, emphasizing the contrast.