Massachusetts State Police forensic expert reveals the potential blood samples in red Solo cups that Canton police collected were never tested.

At least nine key witnesses remain for both the prosecution and the defense at Karen Read's second trial. Here's who they are.

What happens if prosecutors don’t call key witnesses in Karen Read retrial? 03:40. After three full days of testimony from Massachusetts State Police Sgt. Yuri Bukhenik, lawyers

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 ongoing trial is Read’s second; her first murder trial ended in a high-profile mistrial last July after jurors returned deadlocked. Abby Patkin is a general assignment news reporter whose work touches on public transit, crime, health, and everything in between. She has been covering the Karen Read murder case.

Jurors sitting on the high-profile case became privy to a slew of text message exchanges that showed a flirtation between the woman charged with killing her boyfriend and an ATF agent who was a friend of the dead man,

Jurors also heard from two people — Ryan Nagel and Heather Maxon — who arrived at 34 Fairview Road in Canton, where O‘Keefe’s unresponsive body was found, at the same time as Read and O‘Keefe did shortly after midnight on Jan. 29, 2022.

Judge Beverly Cannone is in charge of Karen Read's high-profile in Dedham, Massachusetts trial for a second straight year.

Among potential witnesses in the trial of Karen Read, a Massachusetts woman accused of ... “The defense's job is not to put forth its own theory, it’s to punch holes and the defense has done a good job of raising all kinds of questions.”