The appellants were convicted of first degree murder following a home invasion robbery where the victim was bound and shot.
At trial, they advanced a cut-throat defence, each accusing the other of being the shooter.
On appeal, they argued the trial judge misdirected the jury on the elements of constructive first degree murder under s. 231(5)(e) of the Criminal Code and party liability under s. 21(2).
The Court of Appeal held that while s. 21(2) can form the basis for first degree murder, the trial judge failed to adequately instruct the jury on what factual findings were required to conclude the non-shooter actively participated in the killing.
The appeals were allowed in part, the first degree murder convictions were set aside, and convictions for second degree murder were substituted.