Ninety scientists, doctors call for convicted child killer Kathleen Folbigg's release WedWednesday 3 updated ThuThursday 4 MarMarch 2021 at 2:51am A 2019 inquiry upheld Kathleen Folbigg's convictions of murder and manslaughter, but a petition is calling for her release. ( Print text only Cancel A group of 90 expert scientists and doctors is calling for convicted child killer Kathleen Folbigg to be pardoned in light of new medical evidence which suggests her children may have died of natural causes. Key points: Ms Folbigg has served 18 years in prison for the murder and manslaughter of her four children Experts are arguing that two of her children may have died of a cardiac condition