She looked down the crescent, nearly identical facades receding along its shallow curve. The snow fell more thickly now, and the featureless sky was lit with a salmon glow of sodium lamps. The street was deserted, the snow fresh and unmarked. There was an alien edge to the cold air, a faint, pervasive hint of burning, of archaic fuels. Petal's shoes left large, neatly defined prints. They were black suede oxfords with narrow toes and extremely thick corrugated soles of scarlet plastic. She followed in his tracks, beginning to shiver, up the gray steps to number 17.