The plaintiff was acquitted of murder following a 'Mr. Big' sting and sued the police for negligent investigation, as well as the Crown attorneys who provided legal advice to the police.
The police defendants cross-claimed against the Crown attorneys for contribution and indemnity based on negligent legal advice.
The Crown attorneys moved to strike the cross-claim under Rule 21.
The motion judge declined to strike the cross-claim, finding it was not plain and obvious that prosecutorial immunity applied to claims by police.
The Divisional Court allowed the appeal and struck the cross-claim, holding that Crown attorneys enjoy absolute immunity from civil suits in negligence arising from the exercise of their official functions, including providing legal advice to police during an investigation.