True crime is experiencing a boom these days. Its popularity is directly connected to the number of forensic investigative shows on television. The average viewer of CSI probably knows more about criminal profiling and blood pattern analysis than most retired police officers. At least one book, it seems, is published on every major murder committed in Australia. Some murders warrant the public’s attention more than others; they represent turning points in our society. A good example is the disappearance on 15 July 1977 of Liberal parliamentary candidate and anti-marijuana crusader Donald Mackay from a hotel car park in the Riverina town of Griffith. That evening, Mackay left the Griffith Hotel and headed for his van. A local accountant heard a groaning noise and three ‘whip cracks’. By eight o’clock that night, when Mackay hadn’t returned home, his wife became worried. At midnight, Barbara Mackay rang the Griffith police and reported her husband missing. She had been wary of calling the local police earlier because she didn’t trust them – and with good reason. Early next morning, Mackay’s solicitor found the locked van in the hotel car park. Three spent cartridges lay on the ground, and Mackay’s keys were nearby. Blood was smeared on the front mudguard, the side door and front wheel; the blood type matched Mackay’s. Despite an exhaustive search and a large government reward, his body was never found.