Retrial of Karen Reed Raises Questions in Murder Case
A retired Massachusetts judge recently observed that, in disputes over expert testimony, the judge often has the final say. This observation has become particularly relevant in the retrial of Karen Reed, who faces murder charges in connection with the death of her ex-boyfriend, Boston police officer John O’Keefe, 46.
Reed, 45, is alleged to have left a house party in Canton, Massachusetts, where O’Keefe reportedly died from a fractured skull and hypothermia during the blizzard on January 29, 2022.
Defense Expert’s Crash Tests Under Scrutiny
Dr. Daniel Wolf, an expert from the ARCCA Crush Reconstruction Company, testified that various tests aimed at recreating the crash that led to O’Keefe’s death yielded “inconsistent” findings. However, during cross-examination, special counsel Hank Brennan challenged the integrity of Wolf’s methods. He pointed out that Wolf used a dummy that was much smaller than O’Keefe and conducted only one test at different speeds, instead of several tests to establish consistent results.
Interestingly, the pivotal moment in Wolf’s testimony came not from his analysis, but when he was questioned about a video clip played earlier in the trial. Jack Lou, a retired Massachusetts judge and Boston University law professor, noted that this moment was striking for its implications.
Conflicting Evidence and Defense Strategies
Further complicating matters, Brennan played a video recording in which a “splinter of glass” was mentioned, supposedly pulled from O’Keefe’s nose during an interview. It was suggested that this incident tied back to the prosecution’s core assertion that O’Keefe had been struck by Reed’s Lexus SUV, resulting in his death on a snowy night.
In court, Wolf emphasized the importance of his findings, arguing that O’Keefe’s injuries appeared consistent with being hit by a vehicle. However, this conclusion remains contested as it conflicts with observations on the damage to O’Keefe’s clothing.
The Role of the Judge
Experts weigh heavily in such trials, but Lou expressed hopes that the judge’s instructions would clarify that it’s ultimately the judge—not the experts—who will determine the facts of the case. He reflected on how judges tend to have keen observational skills honed through experience, which can influence their interpretation of expert conclusions.
It’s a nuanced situation; the defense isn’t required to prove Reed’s innocence but aims to instill reasonable doubt in the prosecution’s assertions. Notably, attorney Mark Bedellaux remarked that, during the testimonies, Dr. Wolf raised significant uncertainties regarding the prosecution’s claims, potentially impacting the trial’s outcome.
The defense team is scheduled to pause their case next week, as Reed faces serious charges that could lead to a lengthy prison sentence if she is found guilty.

