570 is a leading Supreme Court of Canada case on the requirements and defence for the criminal charge of rape.

Their relationship had been one of contention and discord with violence on the part of the appellant: "slappings" or "roughing up" in his description, "blows" in hers.

The complainant managed to calm him down by holding out hope of some sort of reconciliation and engaging in intercourse with the appellant.

Because the appellant was willfully blind to the consent of the complainant, the defense of mistake of fact cannot apply.

An annotation by A. Manson [3] criticizes McIntyre's decision pointing out that the Supreme Court only has jurisdiction to hear issues of law.