The author of a new book says he has conclusive evidence that Lee Harvey Oswald was the lone gunman in the 1963 assassination of President John F. Kennedy.
The book, "Case Closed: Lee Harvey Oswald and the Assassination of JFK," is excerpted in the issue of U.S. News & World Report due on the stands Monday.Coincidently, the CIA is delivering another 90,000 pages of previously unreleased files on the assassination to the National Archives on Monday. .
"Case Closed" author Gerald Posner says new enhancements and computer animation of the Zapruder film - the amateur film taken of the assassination - plus ear- and eyewitness accounts at Dealey Plaza in Dallas show the exact timing of all three shots fired.
Posner says the evidence proves Oswald had eight seconds to fire the three shots, not four or five as some theorists contend.
Posner also says he has "incontrovertible" evidence that the second shot wounded both Kennedy and Texas Gov. John Connally - the so-called "magic bullet" - and emerged only slightly damaged.
The book will also include an interview with Oswald's KGB handler about Oswald's time in the Soviet Union, and information from still classified files on Oswald, according to the publisher, Random House.
Random House also says the book has the "most complete instigation ever of Jack Ruby's actions during the assassination weekend, highlighting errors in previous reports, and showing why Ruby killed Oswald."