Mill v The Queen

Mill appealed his conviction for murder in the Supreme Court of South Australia to the High Court of Australia. The central dispute concerned the admissibility of a confession made by Mill to police. Mill argued that the confession was involuntary and therefore inadmissible, as it was obtained in circumstances that rendered it unreliable.

The High Court was required to determine whether the confession was made voluntarily, considering the circumstances in which it was obtained. This involved an examination of the legal principles governing the admissibility of confessions, particularly where there are allegations of unfairness or oppression in the manner of their procurement. The court had to assess whether the trial judge had erred in admitting the confession into evidence.

The High Court, applying the principles established in *R v Lee* and *Basto v The Queen*, held that a confession is inadmissible if it was not voluntary. A confession is not voluntary if it was induced by threats, promises, or pressure that were unfair or oppressive. The court found that the police had acted in a manner that was unfair and oppressive towards Mill, thereby rendering his confession involuntary. Consequently, the confession should not have been admitted into evidence.

The High Court allowed the appeal, quashed the conviction, and ordered a new trial.