There are 1300 cold cases in Australia, many of them sitting in the dusty boxes of police archives. Among them is the casefile of 38-year-old mother of two, Maria James.
On a winter morning in June 1980, Maria James turned to her son Mark and looked him in the eyes.
‘She said to me, “if anything happens to me, look after your brother.”’
Later that day she was found stabbed to death at the back of her suburban Melbourne bookshop, where she lived with her two boys.