This 2x60 limited documentary delves into the story of women in Britain and Australia wrongly convicted of killing more than one of their infants following a controversial probability theory. And the ongoing true stories of those still fighting for freedom from prison cells, with a focus on the appeal of Kathleen Folbigg who has been dubbed 'Australia's deadliest female serial-killer' and has so far spent 18 years in prison after being convicted of killing her four babies.