D v The Queen

The High Court of Australia considered an appeal by D against a conviction for a sexual offence. The central dispute concerned the admissibility of certain evidence obtained from D, specifically a confession made to police. The High Court was tasked with determining whether this confession had been improperly obtained, thereby rendering it inadmissible in the trial proceedings.

The primary legal issue before the Court was whether the confession made by D to police was voluntary. This involved an examination of the circumstances surrounding the confession, including whether D had been improperly induced or coerced into making it. The Court also considered the application of the common law exclusionary rule, which permits courts to exclude evidence obtained improperly, even if it is relevant and otherwise admissible, where its prejudicial effect outweighs its probative value.

The Court reasoned that a confession is voluntary if it is free from any improper pressure or inducement. In this instance, the Court found that the confession was not voluntary due to the manner in which the police questioned D. The judges applied the principle that confessions obtained in circumstances where a suspect's will has been overborne, or where they have been unfairly pressured, are inadmissible. The Court concluded that the confession was improperly obtained and therefore should have been excluded from evidence at trial.

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