Can new scientific evidence prove a convicted child-killer is innocent

According to the law Kathleen Folbigg is the worst of the worst - a serial killer rightly languishing in prison for taking the lives of her four babies But what if it can now be proven she s not a villain but a victim and has been locked up for the last 18 years for nothing A group of 90 of the world s most respected scientists say that s the case They re backing some extraordinary work which has put these murders under the microscope and identified a rare genetic mutation inherited by two of the babies - scientific evidence they say almost certainly caused their deaths It s a stunning twist in this tragic story but is it enough for Kathleen Folbigg to be set free

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