[Machine Translation] William Warwick, who has become a police officer in Scotland Yard over the objections of his father, a top lawyer, is transferred to the Independent Narcotics Task Force, which reports directly to the chief superintendent, and is given a special mission. His mission is to identify and arrest the notorious drug lord who rules London, known as "The Viper". Just as he begins his investigation, he discovers that the drug dealer he has caught is a man with whom William has a history. A masterpiece mystery by a master storyteller.