Gerald Posner
Gerald Leo Posner (born May 20, 1954) is an American investigative journalist and author of twelve books, including Case Closed: Lee Harvey Oswald and the Assassination of JFK (1993), which explores the John F. Kennedy assassination, and Killing the Dream: James Earl Ray and the Assassination of Martin Luther King, Jr. (1998), about the assassination of Martin Luther King, Jr. A plagiarism scandal involving his articles and books arose in 2010. In 2015, the Chicago Tribune called Posner ""a merciless pitbull of an investigator.""