Part I: January 1976 Chapter One ON THOSE CLOUDY DAYS, Robert Neville was never sure when sunset came, and sometimes they were in the streets before he could get back. If he had been more analytical, he might have calculated the approximate time of their arrival; but he still used the lifetime habit of judging nightfall by the sky, and on cloudy days that method didn't work. That was why he chose to stay near the house on those days. He walked around the house in the dull gray of afternoon, a cigarette dangling from the corner of his mouth, trailing.
