ABC Local | Conviction of serial killer Kathleen Folbigg questioned in light of new forensic evidence ABC Local Advances in medical sciences could help exonerate convicted serial killer Kathleen Folbigg, with new forensic evidence suggesting the deaths of her four children could be explained by natural causes. Australia's worst female serial killer: 'Doubt or question' over evidence Baby killer Folbigg convicted on circumstantial evidence, inquiry told Kathleen Folbigg inquiry: Australia's worst female serial killer to have conviction re-examined |