The appellant, who was unrepresented, pleaded guilty to theft, threatening to use a weapon, and uttering a death threat.
Over his objection, the Crown requested an assessment for criminal responsibility.
The trial judge held a summary hearing, admitted the assessment report, and entered not criminally responsible (NCR) verdicts for the assault and threat charges without informing the appellant of his procedural rights.
The Court of Appeal allowed the appeal, finding that the trial judge failed to ensure the unrepresented appellant understood his rights to testify, call evidence, or cross-examine the report's author, resulting in a miscarriage of justice.
A new trial was ordered.