21st April 2016, Campsie, Western Sydney, Australia. A 25-year-old student at the university of technology, Sydney, had finished her studies and went shopping in the downtown district. Her name is Michelle Leng, CCTV captures her entering St. James station, on her way to board a train home. Tragically, the CCTV images of Michelle scanning her opal card at the barriers of the subway, would be one of the final sightings of her alive.