The threat of attack from foreign terrorists bent on damage to the United States has hung over the nation for years, bringing fear to many, and opportunity for profit to others. Killer Mountain begins with Preston Sturgis, a Boston developer and lower-echelon drug dealer, who mistakenly learns a deadly secret and flees for his life to his lawyer, Wally Carver, in New Hampshire. Former Carver son-in-law, Hudson Rogers, and his new wife, Cilla, are innocently pulled into the murderous pursuit when the gang attempts to kidnap Cilla, who is more skilled at self-defence than they know. Failing to capture her, the relentless hunters destroy the Rogers' home. A fast-paced cross-country offensive begins involving extortion, threats against thousands of lives, and a perilous expedition to the top of the highest peak in the north-east.