In November 1963 , American intelligence officer Paul Christopher investigates the assassination of US President John F Kennedy . Believing that the Kennedy White House was behind the assassination of Vietnamese President Ngo Dinh Diem , Christopher deduces that Vietnamese leaders had Kennedy assassinated as revenge . When one of Kennedy 's former advisers threatens Christopher not to discuss the matter with anyone else , Christopher quits the Agency and heads to Vietnam to find the truth
assassination of US President John F Kennedy
Assassination of John F. Kennedy
The Tears of Autumn