Karen Read Murder Trial: Jurors Taken to Crime Scene Where Boston Officer Died, as Testimony Continues

The murder retrial of Karen Read, accused of killing her Boston police officer boyfriend, John O’Keefe, could land in jurors hands by Friday.

USA Today reported that both the prosecution and defense attorneys informed Judge Beverly Cannone that the jury might begin deliberations on Friday in Karen Read’s second murder trial.

The defense team of Read presented biomechanist Andrew Rentschler as their final witness on Tuesday. Rentschler, during his testimony, elaborated on his examination of O’Keefe’s brain, head, and arm injuries.

He shared that his analysis showed impact forces far beyond those indicated in O’Keefe’s injuries. Rentschler mentioned that the tests conducted by ARCCA, which included a field simulation at 29 mph, typically resulted in fractures and dislocations, none of which were present in O’Keefe’s situation, as per ABC 5.

As CrimeOnline previously reported, prosecutors alleged that Read, 45, intentionally hit O’Keefe with the rear passenger side of her Lexus SUV on January 29, 2022, after dropping him off outside a home on Fairview Road in Canton.

She faces charges of second-degree murder and two other offenses.

A photograph of John O’Keefe’s right arm is republished during the murder retrial of Karen Read in Norfolk Superior Court, Monday, June 2, 2025, in Dedham, Mass. (Pat Greenhouse/The Boston Globe via AP, Pool)

Special Prosecutor Hank Brennan pressed Rentschler on the limits of his analysis, pointing to his crash dummies use and lack of recent peer-reviewed work. The prosecution then questioned his independence, noting his close ties to other defense experts.

The court also reviewed autopsy photos and paint-transfer results. Rentschler said the evidence didn’t match the prosecution’s sideswipe theory.

A photo of the rear, right tail light on Karen Read’s SUV is shown again as evidence during the Read murder retrial at Norfolk Superior Court Tuesday, June 3, 2025, in Dedham, Mass. (Libby O’Neill/The Boston Herald via AP, Pool)

Read has pleaded not guilty. Her defense team argued she was framed and claimed that O’Keefe entered the house—then owned by another Boston officer, Brian Albert, —where he was fatally beaten and possibly attacked by a German Shepherd. They said his body had been thrown out into a blizzard.

A hung jury ended Read’s first trial in July 2024.

Forensic pathologist and former medical examiner Elizabeth Laposata, along with other defense experts, argued that an animal likely bit O’Keefe and that he passed out instantly after hitting his head on an object.

Meanwhile, Read said Tuesday that she had made up her mind to not testify during the retrial.

“I am not testifying. The case is — it’s our last witness. (The jury) has heard my interview clips. They’ve heard my voice,” Read told reporters. “They’ve heard a lot of me.”

[Feature Photo: Karen Read/LinkedIn and John O’Keefe/Boston Police Department]

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