Medical examiner Charles Wetli was at the center of a 4-year investigation
                                
                                
                                    (Newser) -
                                    Dr. Charles Wetli, a pioneer in forensic pathology, was in demand as an expert in other people's cases across the country. In 1996, it was a case of his own—the explosion of TWA Flight 800—that made the Long Island medical examiner a national figure, the  New York ...