Opening statements in Read’s murder trial will be held Tuesday, more than three years after O’Keefe’s death rocked the town of Canton and launched a sprawling legal saga that has since captured the nation.

The second murder trial of Karen Read, whose case has sparked a national debate and won her legions of devoted fans, has begun.

Opening statements are expected Tuesday in the trial of Karen Read, who is accused of causing the death of her Boston police officer boyfriend but whose supporters contend is being framed for a