Coughlan v The Queen

In *Coughlan v The Queen*, the High Court of Australia considered an appeal by the applicant, Coughlan, against his conviction for murder. The central dispute concerned the admissibility of evidence obtained through a covert recording made by police.

The primary legal issue before the High Court was whether the admission of the covert recording, which captured the applicant discussing the alleged murder, was an error of law. This involved determining whether the recording was obtained in contravention of the applicant's rights and, if so, whether the trial judge erred in admitting it despite potential prejudice to the applicant.

Gageler J, in his judgment, focused on the principles governing the admissibility of evidence obtained in contravention of an individual's rights. His Honour affirmed that while the common law permits the admission of illegally or improperly obtained evidence, this discretion is not unfettered. The court must weigh the probative value of the evidence against its prejudicial effect. In this instance, Gageler J found that the trial judge had properly exercised their discretion in admitting the recording, as its probative value in establishing the applicant's guilt outweighed any potential prejudice. The recording was considered crucial to the prosecution's case, and safeguards were in place to mitigate prejudice.