Jennifer McCabe is set to take the witness stand in Karen Read's second murder trial. Read pleaded not guilty to murder charges in the death of Boston police officer John O’Keefe and is facing a retrial after a jury was unable to reach a verdict last year.

Jen McCabe, a key witness in the Karen Read trial, is set to return to the stand Wednesday during the seventh day of witness testimony in Norfolk Superior Court. You can watch testimony live on CBS News Boston when it begins at 9 a.

Testimony resumes Wednesday in Karen Read’s retrial with witness Jennifer McCabe returning to the stand. She testified Tuesday that a frantic Read repeatedly asked her and another woman, Kerry Roberts, if she could have struck her boyfriend, John O’Keefe, as the trio made their way to the Fairview Road home where his body was found.