Top former National Security Agency (NSA) codebreakers believe that another cipher written by the infamous Zodiac killer has now been cracked, convincing them of his identity as the late Chicago-born military veteran posited by an amateur sleuth. In a world exclusive, the Daily Mail previously revealed that investigative consultant Alex Baber had concluded that Marvin Merrill was the perpetrator behind the Zodiac killings in California's Bay Area in the late-1960s - as well as the murderer of the Black Dahlia, Elizabeth Short, in Los Angeles in 1947. #zodiackiller #crime #blackdahlia