The main points that Bishop advanced included that the murder weapon, which Bailey claimed he had sold to a man near Coober Pedy before the murders, was never found. The description of the murders in Bailey's confession contradicted the post mortem results. Bailey claimed to have shot all three of the victims as they ran from him; however, the autopsies indicated that the Bowmans and Whelan were shot while lying on the ground unconscious. During his trial, Bailey claimed that he had only signed the confession after hearing his wife crying in another room. Bailey told the court that detectives then told him that they would leave her alone if he signed. A grey Ford Zephyr was seen near the murder scene while Bailey drove a black 1938 DeSoto. Footprints believed to belong to the killer had been found at the murder scene, and were estimated as being a size 7 or 8. Bailey wore a size 5½ shoe.