Morgan v The Queen

In *Morgan v The Queen*, the High Court of Australia considered an appeal by the applicant, Morgan, against his conviction for murder. The dispute centred on the admissibility of certain evidence during his trial.

The primary legal issue before the High Court was whether the trial judge had erred in admitting evidence of the applicant's prior convictions and prior bad character. This raised questions concerning the proper application of the rules of evidence, particularly regarding the prejudice that such evidence might create in the minds of the jury, and whether its probative value outweighed that prejudice.

Toohey J, in his judgment, focused on the principles governing the admission of evidence of prior convictions. His Honour affirmed that such evidence is generally inadmissible to prove that the accused committed the offence charged, as it risks the jury convicting the accused on the basis of their past conduct rather than the evidence relating to the present charge. However, evidence of prior convictions may be admitted if it is relevant for a purpose other than to prove the commission of the offence charged, such as to establish a system or pattern of conduct, or to rebut a defence. In this instance, Toohey J found that the evidence of prior convictions was admitted for an improper purpose and that its prejudicial effect was not outweighed by its probative value, leading to a miscarriage of justice.

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