 Aaron meets Chrissie's sister Rebecca White (Emily Head) and learns that Robert had had an affair with her while dating Chrissie in the past.Aaron overhears Chrissie's teenage son, Lachlan White (Thomas Atkinson), threatening to make false allegations of sexual abuse against Robert and warns him to stay away.Robert calms Aaron down and they later meet at a barn, where Aaron shows Robert that he has Lachlan tied up in the boot of his car.