A member of the panel that investigated JFK’s death now worries he was a victim of a “massive cover-up.” Half a century after the Warren Commission concluded there was no conspiracy in John F. Kennedy’s assassination, the commission’s chief conspiracy hunter believes the investigation was the victim of a “massive cover-up” to hide evidence that might have shown that Lee Harvey Oswald was in fact part of a conspiracy. In new, exclusive material published today in the paperback edition of a bestselling history of the investigation, retired law professor David Slawson tells how he came to the conclusion, on the...