Jack Williams was the best friend of Vietnam veteran and detective Mike Hammer. When Jack is murdered, Mike makes it his business to solve the crime. He is helped by his secretary Velda, and partly helped, partly hindered by the Chief of Police, Pat Chambers. On the trail of the killer, Mike discovers government conspiracies, and plots used by the CIA and the Mafia.

Two years after the Westworld tragedy in the Delos amusement park, the corporate owners have reopened the park following over $1 billion in safety and other improvements. For publicity purposes, reporters Chuck Browning and Tracy Ballard are invited to review the park. Just prior to arriving at the park, however, Browning is given a clue by a dying man that something is amiss.

A sadistic small-town sheriff has a habit of deliberately forcing speeders to their deaths on the mountain roads leading into town. The brother of one of the victims rolls into town in his hot rod to investigate his brother’s death.