By early 1977, the metropolis was in the grip of hysteria caused by a murderer dubbed "Son of Sam." And on a sweltering night in July, a citywide power outage touched off an orgy of looting and arson that led to the largest mass arrest in New York's history. As the turbulent year wore on, the city became absorbed in two epic battles: the fight between Yankee slugger Reggie Jackson and team manager Billy Martin, and the battle between Ed Koch and Mario...