Kathleen Folbigg is just trying to survive. She's a grieving mother, sentenced to life in jail for killing her four infant children. That is, until a small group of people start to question whether she might be the victim of a terrible miscarriage of justice. Our thanks to The Francis Crick Institute for sharing recordings and insights.

Scientist Carola Vinuesa and her team test their extraordinary genetic discovery in a court of law. Our thanks to The Francis Crick Institute for sharing recordings and insights.

Rachel Sylvester travels to Greece to investigate whether genetic science could change the story in the case of Roula Pispirigou – a mother who was convicted of killing her three young children just last year. Our thanks to The Francis Crick Institute for sharing recordings and insights.