Karen 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.

The high-profile Karen Read trial was back inside a Dedham, Massachusetts courtroom with testimony from the medical examiner.

John O’Keefe died of blunt impact injuries to the head and hypothermia, according to medical examiner Dr. Irini Scordi-Bello.

The jurors in Karen Read murder retrial heard testimony from a medical examiner who detailed injuries to Boston officer John ...

Karen Read's defense team says she was framed for the murder of her Boston police officer boyfriend in an elaborate ...

A forensic scientist returned to the witness stand Thursday morning in the Karen Read murder retrial.Maureen Hartnett, a scientist with the<a class="excerpt-read-more" href=" More ...

Canton Fire Department paramedic Timothy Nuttall shows how to do a Carotid Pulse at Karen Read's second murder trial at ...

Massachusetts State Police forensic expert reveals the potential blood samples in red Solo cups that Canton police collected ...