Gaston Nicholas was charged with two counts of arson and admitted to setting the fires.
The issue was whether he was not criminally responsible (NCR) due to a mental disorder under s. 16 of the Criminal Code.
The defence argued that vascular dementia, paranoia, or delusions rendered him incapable of appreciating the nature and quality of his acts or knowing they were wrong.
The Crown contended that despite some dementia, his actions and words demonstrated appreciation and knowledge of wrongfulness.
The court found that Nicholas suffered from early-stage dementia, which qualified as a mental disorder, but it did not render him incapable of appreciating the nature and quality of his acts or knowing they were morally wrong.
Consequently, the NCR defence was not established, and Nicholas was found criminally responsible and guilty of arson.