The Queen v Deacon

The appeal concerned the adequacy of a non-parole period fixed for the respondent, who had been convicted of murder. The Crown appealed against the sentence imposed by the sentencing judge, arguing that the non-parole period of 21 years and six months was manifestly inadequate given the objective and subjective factors of the offence. The appeal was heard by Grant CJ, Southwood J, and Riley AJ.

The central legal issue before the court was whether the non-parole period of 21 years and six months was so disproportionate to the seriousness of the murder offence as to shock the public conscience and undermine public confidence in the courts' ability to deter criminal activity. This required the court to consider the proper interpretation and application of section 53A of the Sentencing Act 1995 (NT), which governs non-parole periods for murder, and to assess whether the sentencing judge had given appropriate weight to the purposes of general deterrence, punishment, and denunciation.

The court dismissed the Crown's appeal. It reasoned that the standard non-parole period of 20 years represents the middle of the range of objective seriousness for murder offences, not the least serious category as contended by the Crown. The court found that the sentencing judge had correctly identified and applied the relevant factors under section 53A(4) of the Sentencing Act, including the respondent's motive to prevent the victim from having a role in their son's upbringing, the elaborate planning and concealment of the crime, the obstruction of the police investigation, and the absence of remorse. These factors warranted a non-parole period longer than the standard 20 years. The court concluded that the non-parole period of 21 years and six months was not so disproportionate as to be considered manifestly inadequate.