"Every night, at exactly a quarter past three, something dreadful happens on the street outside our bedroom window. We peek through the curtains, yawning and shivering in the life-draining chill, and then we clamber back beneath the blankets without exchanging a word, to hug each other tightly and hope for sound sleep before it's time to rise. Usually what we witness verges on the mundane. Drunken young men fighting, swaying about with outstretched knives, cursing incoherently. Robbery, bashings, rape. We wince to see such violence, but we can hardly be shocked or surprised any more, and we're never tempted to intervene: it's always far too cold, for a start! A single warm exhalation can coat the window pane with mist, transforming the most stomach-wrenching assault into a safely cryptic ballet for abstract blobs of light. On some nights, though, when the shadows in the room are subtly wrong, when the familiar street looks like an abandoned film set, or a painting of itself perversely come to life, we are confronted by truly disturbing sights, oppressive apparitions which almost make us doubt we're awake, or, if awake, sane. I can't catalogue these visions, for most, mercifully, are blurred by morning, leaving only a vague uneasiness and a reluctance to be alone even in the brightest sunshine."