Park v The Queen

Park appealed to the High Court of Australia against his conviction for murder. The central dispute concerned the admissibility of a confession made by Park to police. The High Court was required to determine whether the confession was obtained in circumstances that rendered it inadmissible under the common law, specifically whether it was unfairly obtained or improperly admitted into evidence at trial.

The legal issues before the High Court were whether the trial judge erred in admitting the confession into evidence, and whether the confession was obtained in contravention of the common law principles governing the admissibility of confessions. This involved considering whether the confession was voluntary and whether its admission would be unfair to the accused, having regard to the circumstances in which it was made.

The High Court, by majority, allowed the appeal and quashed the conviction. McHugh and Heydon JJ held that the confession was unfairly obtained because the police had failed to caution the appellant in accordance with the Judges' Rules, which, while not having statutory force, represented a long-standing practice that informed the common law. Kirby J, dissenting, found that the caution was not a prerequisite for admissibility and that the confession was otherwise voluntary and admissible. The majority concluded that the admission of the unfairly obtained confession had occasioned a miscarriage of justice, necessitating a new trial.