The Crown alleged that Lindy Chamberlain had cut Azaria's throat in the front seat of the family car, hiding the baby's body in a large camera case. She then, according to the proposed reconstruction of the crime, rejoined the group of campers around a campfire and fed one of her sons a can of baked beans, before going to the tent and raising the cry that a dingo had taken the baby. It was alleged that at a later time, while other people from the campsite were searching, she disposed of the body. The key evidence supporting this allegation was the
jumpsuit, discovered about a week after the baby's disappearance about 4 km from the tent, bloodstained about the neck, as well as a highly contentious forensic report claiming to have found evidence of
foetal haemoglobin in stains on the front seat of the Chamberlains' 1977
Holden Torana hatchback. Foetal haemoglobin is present in infants six months and younger; Azaria was nine-and-a-half weeks old at the time of her disappearance. Lindy Chamberlain was questioned about the garments that Azaria was wearing. She claimed that Azaria was wearing a
matinee jacket over the jumpsuit, but the jacket was not present when the garments were found. She was questioned about the fact that Azaria's
singlet, which was inside the jumpsuit, was inside out. She insisted that she never put a singlet on her babies inside out and that she was most particular about this. The statement conflicted with the state of the garments when they were collected as evidence. The garments had been arranged by the investigating officer for a photograph. In her defence,
eyewitness evidence was presented of dingoes having been seen in the area on the evening of 17 August 1980. All witnesses claimed to believe the Chamberlains' story. One witness, a nurse, also reported having heard a baby's cry after the time when the prosecution alleged Azaria had been murdered. Evidence was also presented that adult blood also passed the test used for foetal haemoglobin, and that other organic compounds can produce similar results on that particular test, including mucus from the nose and chocolate milkshakes, both of which had been present in the vehicle where Azaria was allegedly murdered. Engineer Les Harris, who had conducted dingo research for over a decade, said that, contrary to Cameron's findings, a dingo's
carnassial teeth can shear through material as tough as motor vehicle seat belts. He also cited an example of a captive female dingo removing a bundle of meat from its wrapping paper and leaving the paper intact. The defence's case was rejected by the jury. Lindy Chamberlain was convicted of murder on 29 October 1982 and sentenced to life imprisonment. Michael Chamberlain was found guilty as an accessory after the fact
Appeals An unsuccessful appeal was made to the Federal Court in April 1983. Subsequently, the High Court of Australia was asked to quash the convictions on the ground that the verdicts were unsafe and unsatisfactory. However, in February 1984 the court refused the appeal by majority (3–2). ==Release and acquittal==