Mullins v The Queen

Mullins appealed to the High Court of Australia against his conviction for murder. The central dispute concerned the admissibility of certain evidence obtained from the appellant, specifically statements made by him to police and a confession.

The High Court was required to determine whether the trial judge had erred in admitting the appellant's confession into evidence, given the circumstances under which it was obtained. Specifically, the court had to consider whether the confession was voluntary and whether the appellant had been properly cautioned before making it. The admissibility of other statements made by the appellant to police was also in question.

The High Court held that the trial judge had erred in admitting the confession. Brennan CJ, Toohey and Gummow JJ found that the confession was not voluntary, as it was obtained in circumstances where the appellant was under duress and had not been properly informed of his rights. The court applied the principle that a confession must be voluntary to be admissible, and that this requires the absence of coercion or undue influence. The other statements were also deemed inadmissible due to the circumstances of their procurement. The appeal was allowed, the conviction was quashed, and a new trial was ordered.