Book excerpt: For six decades, Pittsburgh-based forensic scientist Cyril Wecht has been an outspoken authority when horrible things happen to everyday people--murders, childhood deaths, tragic accidents and police brutality. His expertise and testimony have been called upon in high-profile cases, including the deaths of John F. Kennedy, Robert F. Kennedy, Martin Luther King, Jr., Elvis Presley, JonBenet Ramsey, Laci Peterson and others. As a criminal defendant, in 1979, he was acquitted on charges of personally profiting from his office as Allegheny County Coroner; a federal public corruption charge was dismissed in 2008. Both cases, his attorneys argued, were politically motivated. Wecht's memoir describes his work on famous cases, his life in the public eye and his legal battles with determined and powerful authorities, from his hometown DA to a U.S. Attorney and the FBI.