" You see it in films sometimes, when one person's pointing a gun at another person, and the one with the gun's making the other one do all kinds of things. Then suddenly there's a mistake, a tussle, and the gun's with the second person. And the second person looks at the first person with a gleam, a kind of can't-believe-my-luck expression that promises all kinds of vengeance. "

― Kazuo Ishiguro , Never Let Me Go