Where a procedural irregularity creates a significant possibility that inadmissible, prejudicial evidence was accessible to the jury, a miscarriage of justice is established even though it cannot be positively proved the jury accessed the material. The test is whether there was a 'significant possibility' the verdict was affected, not whether the appellant can prove the irregularity occurred. Separately, acquittals on some counts do not render guilty verdicts on other counts unreasonable where the quality of evidence supporting the different counts is materially different.
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