R v Higgins

The appeal concerned a criminal conviction for murder. The appellant, Higgins, argued that evidence of his conduct at Prion Court was improperly admitted at trial, and that the prosecution had improperly introduced an alternative basis for conviction, namely joint criminal enterprise, late in the proceedings. The appeal was heard by Stanley and Parker JJ and David AJ.

The primary legal issues before the appellate court were whether the trial judge erred in admitting evidence of the appellant's discreditable conduct at Prion Court, and whether the prosecution's late introduction of a joint criminal enterprise theory constituted a miscarriage of justice. The appellant contended that the Prion Court evidence was unfairly prejudicial and did not meet the requirements for admitting discreditable conduct evidence under section 34P of the *Evidence Act 1929* (SA). He also argued that the shift in the prosecution's case to include joint criminal enterprise, after initially presenting him as the principal offender, was unfair.

The appellate court dismissed the appeal on both grounds. Regarding the Prion Court evidence, the court found it was admissible under section 34P(2)(a) of the *Evidence Act 1929* (SA) because its probative value, in establishing the appellant's presence with co-accused, their possession of weapons, and the appellant's apparent leadership role, substantially outweighed any prejudicial effect. The court noted the trial judge had carefully directed the jury on the proper use of this evidence. Concerning the joint criminal enterprise, the court found that the prosecution's indication of this alternative basis for conviction was permissible, as it provided a pathway for conviction even if the jury had reasonable doubt about the appellant being the principal offender, and the trial judge had managed the proceedings appropriately.