The appellant, after consuming alcohol, drove his vehicle into a hayride, killing four people and injuring a fifth.
At trial, he was acquitted of criminal negligence causing death and bodily harm, but convicted of dangerous driving, after the trial judge instructed the jury that criminal negligence required a subjective 'deliberate and wilful assumption of the risk'.
The Crown successfully appealed to the Court of Appeal, which ordered a new trial.
The Supreme Court of Canada dismissed the appellant's appeal, holding that the trial judge's instruction placed too high an onus on the Crown, though the Court split on whether the proper test for criminal negligence is purely objective or requires a minimal subjective intent.