On Monday, the jury is expected to hear additional testimony from a forensic scientist with the Massachusetts State Police who testified about Read’s blood alcohol content. Much of the previous week of the trial was taken up by testimony from Jennifer McCabe, who was with Read when she found O’Keefe’s body.

Key witness Jennifer McCabe took the stand again on Friday in the murder retrial of Karen Read, the woman accused of fatally striking her boyfriend and Boston police officer John O’Keefe with her SUV.