Where the Crown case depends entirely on the evidence of a co-accused who has pleaded guilty and received a sentencing discount for giving evidence, and that witness's evidence is shown to be fundamentally unreliable due to hostility, internal inconsistencies, drug use, translation difficulties, and motive to minimise their own involvement, the resulting convictions will be quashed as unreasonable. Findings about a shared Crown witness's credibility in a co-accused's appeal, while not binding, may be adopted after independent assessment.
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