Regina v L Cassar; Regina v E Sleiman; Regina v H Kalache (Judgment No 12)

In Regina v L Cassar; Regina v E Sleiman; Regina v H Kalache, three defendants were convicted of drug trafficking offences. The appeal was heard in the High Court of Australia, which was required to determine the admissibility of evidence that went only to the credit of the defendants, as per the Evidence Act, sections 108(1) and (3)(a) and (b). The central issue before the court was whether the trial judge had correctly exercised his discretion in admitting such evidence, given the potential for it to unfairly prejudice the defendants and the limited probative value it possessed.

The court examined the statutory framework provided by the Evidence Act and considered the principles governing the admissibility of evidence going solely to credit. The court noted that, under section 108, such evidence could only be admitted if its probative value substantially outweighed the risk of unfair prejudice. The court emphasised the importance of balancing these competing considerations, especially in cases where the evidence in question was not directly related to the defendants' guilt or innocence but rather their character or propensity to commit the offence. The court highlighted that the trial judge had to conduct a careful analysis of the specific circumstances of the case, including the nature of the evidence, its relevance, and its potential impact on the fairness of the trial.

The High Court found that the trial judge had not adequately assessed the probative value of the evidence in question and had failed to sufficiently consider the risk of unfair prejudice. The court held that the trial judge's discretion was exercised incorrectly, leading to the admission of evidence that should not have been considered by the jury. As a result, the convictions of the defendants were quashed, and the cases were remitted for a new trial. The court emphasised the need for trial judges to carefully consider the admissibility of evidence that goes only to credit and to ensure that the proper balance is struck between probative value and the risk of unfair prejudice.