I had almost reached the bottom of the page when the cold descended again, that outer cold that was like sleet in January, chilling my skin and crackling the snot in my nose and sending two shuddery puffs of white air from my mouth. My hand clenched and the pencil snapped in two. Behind me, Bunter’s bell rang out one final furious convulsion before falling silent. Also from behind me came a peculiar double pop, like the sound of champagne corks being drawn. Then it was over. Whatever it had been or however many they had been, it was finished. I was alone again.
