One of the best-reviewed thrillers of recent years is Copycat, an adrenaline pumper about the desperate hunt for a mass murderer who copies serial killers of the recent past. An ambitious San Francisco homicide detective (Holly Hunter) and a noted criminal psychologist (Sigourney Weaver) piece together a jigsaw-puzzle of crime as they close in on a fiend with a knack for staying a step ahead... and leaving a body behind.