In June 2018, an SAS soldier known in this defamation trial as Person 18 says he received two threatening letters at his barracks in Perth. In their defence, the newspapers allege that these letters were written by Ben Roberts-Smith. He denies this outright. In this episode, Ben Doherty explains why the newspapers think these letters are important to their defence of this case and we hear testimony from Ben Roberts-Smith, as well as his former employee John McLeod and ex-wife Emma Roberts, who are witnesses for the newspapers, read by voice actors. We also hear closing arguments from both sides and from a defamation barrister about what this trial tells us about defamation law in Australia