When a Swedish literary critic is found tortured to death in a closet at Newark International Airport, the police realize that the murderer made off with the victim's ticket and boarded a flight to Stockholm. With no clear motive in sight, Detectives Paul Hjelm and Kerstin Holm of Intercrime's A-Unit learn that the method of torture used was not only a highly specialized means of extracting information secretly developed during the Vietnam War-- allowing the victim to whisper, but not to scream-- but also that it was the modus operandi of an allegedly deceased homicidal maniac known only as the Kentucky Killer.