Gerald Leo Posner is an American investigative journalist and author of thirteen books, including Case Closed: Lee Harvey Oswald and the Assassination of JFK, which explores the John F. Kennedy assassination, and Killing the Dream: James Earl Ray and the Assassination of Martin Luther King, Jr., about the assassination of Martin Luther King, Jr. A plagiarism scandal involving articles Posner wrote for The Daily Beast and his book Miami Babylon arose in 2010. Wikipedia