HomeCrimeKaren Read Defense Bolstered by 'Cannon' Test in John O'Keefe Murder Retrial
Karen Read Defense Bolstered by 'Cannon' Test in John O'Keefe Murder Retrial

Karen Read Defense Bolstered by 'Cannon' Test in John O'Keefe Murder Retrial

Sarah Johnson

Sarah Johnson

June 6, 2025

3 min read

Brief

Karen Read's defense gains ground with a 'cannon' test showing taillight damage consistent with a thrown glass, challenging murder charges in John O'Keefe's death.

In a dramatic turn of events in the retrial of Karen Read, accused of murdering her former boyfriend, Boston police officer John O'Keefe, the defense has presented compelling new evidence. On the 28th day of the trial, crash reconstruction expert Dr. Daniel Wolfe took the stand, unveiling results from a unique experiment that could shift the narrative in Read's favor.

Dr. Wolfe, director at ARCCA, detailed a specialized test using a 'cannon' to simulate the impact of a cocktail glass thrown at Read's SUV taillight. The results? At speeds between 31 and 37 mph, the damage mirrored what was found on Read's vehicle. This suggests the taillight damage may not have resulted from a collision with O'Keefe, as prosecutors claim, but possibly from an object hurled with force.

Further tests by ARCCA explored whether an impact with the taillight could have caused O'Keefe's fatal skull fracture. At 15 mph, the damage to a test taillight far exceeded that of Read's SUV, yet it still didn’t generate enough force for such a severe injury. Additional experiments with fabric similar to O'Keefe's sweatshirt showed no punctures at various speeds, casting further doubt on the prosecution's theory.

Prosecutors allege that Read, 45, struck O'Keefe with her 2021 Lexus SUV during a blizzard, leaving him to die with a fractured skull. The defense, however, paints a different picture, pointing to alternative causes for his injuries, including a possible dog bite or a physical altercation involving another individual.

As the trial nears its conclusion, with Read's defense potentially resting soon, the stakes couldn’t be higher. A conviction could mean life in prison for Read, whose first trial ended in a deadlocked jury. This latest testimony might just be the pivot her case desperately needs.

Topics

Karen Read trialJohn O'Keefe murdertaillight damage testcrash reconstructionBoston police officer deathARCCA cannon testmurder retrialCrimeUS NewsTrials

Editor's Comments

Well, folks, if throwing a cocktail glass at 37 mph can mimic a car crash, maybe I’ve been underestimating my bartender’s arm strength all these years! But seriously, this 'cannon' test in Karen Read’s trial is a curveball—could it be that the real collision here is between the prosecution’s story and hard evidence? And what’s next, testing if a snowball fight caused the blizzard injuries? This case keeps getting stranger.

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