The scientific term for those little demons that sit on your chest in the dead of night, holding you still, dripping ruin into your nostrils and stealing your breath is "sleep paralysis", apparently. A trick of the brain, they say. It's not really a hellspawn ready to torment you in the twilight between the dream world and our own. "Don't worry, it's all fine", they said. "It should only happen infrequently", they said. You tried to believe them; yet, every night, without fail, your demons would be there with you.