Nearly three years ago, police officers Matthew Arnold and Rachel McCrow were killed in cold blood by a trio of conspiracy theorists at a remote property in rural Queensland.
The trio, Stacey, Nathaniel and Gareth Train, went on to kill again that day, shooting an unarmed neighbour, Alan Dare. They shot and wounded a third police officer, Randall Kirk, and hunted a fourth, Keely Brough, as she hid during and after the shootings.
