Karen Read 's second murder trial is now underway. But this trial is not it for Read's legal troubles. Read, 45, is accused of killing her boyfriend, Braintree native and Boston police officer John O'Keefe outside a Canton home in January 2022. Read's first trial in O'Keefe's death ended in a mistrial in July.

Karen Read asked the nation's highest court to overturn two charges that her lawyers say jurors in the first trial agreed to acquit her of.

Following testimony, Judge Beverly Cannone will hold a hearing on defense expert witnesses who found that John O’Keefe’s injuries weren’t consistent with being hit by a vehicle.