Crime documentary investigating a series of killings along Flinders Highway, a desolate Australian road that stretches 500 miles across Queensland. The first edition reopens the case of 18-year-old student nurses Anita Cunningham and Robin Hoinville-Bartram, who in 1972 set out to hitch-hike the 1,500 miles from their Melbourne home to the far north of Queensland. The young women never reached their destination and while Robin's body was discovered in shallow grave, Anita's remains have never been found. Now, her brother David returns to her last known whereabouts