The appellant was convicted of sexually assaulting his daughter.
At trial, the judge initially excluded evidence of alleged sexual misconduct occurring prior to May 1981, finding its prejudicial effect outweighed its probative value.
However, after defence counsel's cross-examination of the complainant's mother left a false impression regarding a previous incest charge, the trial judge admitted the previously excluded evidence to correct the narrative.
The Supreme Court of Canada held that the trial judge erred in admitting this evidence, as its prejudicial effect still outweighed its probative value, and a mistrial should have been declared instead.
Furthermore, the Court found the trial judge's jury charge regarding the properly admitted similar fact evidence from 1983 and 1985 was inadequate, as it failed to warn the jury against using the evidence to infer guilt based on bad character.
The appeal was allowed and a new trial ordered.