A childhood belief about monsters

When I was growing up, all four of us believed our old house haunted by various monsters. My brothers' solution was never to be in the dark, ever. But I, the big sister, was way smarter and more sophisticated. I knew the monsters followed me up the stairs to my room, but I also knew they could only attack me if they could see the whites of my eyes. My solution: Keep the hall, stairs and my room as dark as possible and never, ever, look back! Must have worked, I was never eaten by monsters.