It was school holidays, December 1921 and 12-year-old Alma Tirtschke left home to run an errand in the heart of Melbourne. She was found the next day murdered. The man accused of her murder, Colin Ross, was hanged after witnesses, who pocketed rewards, lined up to add their testimonies. Eighty-six years later, in 2008, DNA results would find a different conclusion. This is Alma and Colin’s story and how they crossed paths on that fateful day.