When the Bogot¡ chief of police becomes aware his green notebook is missing, he assigns Osvaldo Mendosa to recover it. Mendosa is a Colombian and is the major shareholder in Velocitor, a golf club manufacturing concern recently acquired by the Serian Company. Glendale Police Sergeant Kay Wells suspects him of using the Serian Company as a front for smuggling cocaine. When Mendosa, an avid golfer and gambler, is challenged to a golf match by Meg Serian, widow of the company’s murdered CEO, the sergeant arranges for a police search of Velocitor’s premises. The outcome of the match and the search lead to changes of heart and opinion, as well as to some questions that need answers: Why is the green notebook so important that three people were brutally murdered for just knowing it exists? How is the cocaine smuggled into Glendale? Who are the ultimate consumers? Is Osvaldo Mendosa a hero or an assassin?