not Santos Trafficante, Carlos Marcello, or Sam Giancana; not H. L. Hunt or Clint Murchison; not James Angleton, Bill Harvey, or David Morales; not Curtis LeMay, Charles Willoughby, or John McCloy; not even J. Edgar Hoover; and certainly not Lee Harvey Oswald--had the motive, the means, the opportunity, the demonstrated pattern of previous criminal, even murderous conduct and the overall demented resolve to see it through. Only one man met all of the criteria required for the murder of John F. Kennedy: Lyndon B. Johnson.