The Port Arthur massacre of 28–29 April 1996 was a massacre in which 35 people were killed and 23 wounded. It occurred mainly at the historic Port Arthur former prison colony, a popular tourist site in south-eastern Tasmania, Australia. It was the deadliest mass shooting in Australian history and amongst the most notable. Martin Bryant, a 28-year-old from New Town, a suburb of Hobart, plead guilty of the shootings and was given 35 life sentences without possibility of parole. Following the incident, it emerged in the media that Bryant had significant intellectual disabilities. Following the spree, the Prime Minister of Australia, John Howard, introduced strict gun control laws within Australia and formulated the National Firearms Program Implementation Act 1996, restricting the private ownership of high capacity semi-automatic rifles, semi-automatic shotguns and pump-action shotguns as well as introducing uniform firearms licensing. What has changed in Australia since then? Has the gun violence changed since the new laws were imposed? This edition describes Australia before and after the massacre, with a complete review of each serial killer, the crimes they committed, and the punishment. Included is the reaction to the laws, gun control and murders.