Greg Lynn, a former Jetstar pilot, has started presenting his testimony in the murder trial concerning the deaths of Russell Hill and Carol Clay. Lynn, 57, has pleaded not guilty to the charges of murdering the elderly campers at a remote camping site in the Victorian high country in March 2020. The prosecution claims that Lynn killed the victims with intent, but they are unsure of the circumstances or motive behind the alleged murders. Lynn is the only defense witness in the trial, and his testimony will play a crucial role in determining the outcome of the case.