Biomechanist Dr. Andrew Rentschler testifies as Karen Read's likely final defense witness, challenging claims she hit Boston cop John O'Keefe with her Lexus SUV.

The defense in the Karen Read retrial has rested its case after questioning its final witness, defense expert Andrew Rentschler, a biomechanical engineer from ARCCA.

Jurors in the high-profile Karen Read trial could begin deliberations as early as Friday as defense attorney Alan Jackson called his final witness on Tuesday.

A former medical examiner testified Tuesday during Karen Read’s second murder trial that she did not think hypothermia contributed to Read’s boyfriend’s death, contradicting the o… ...

Laposata will return Tuesday. A second crash reconstruction expert from the company ARCCA will also testify. He’s expected to be the final defense witness. New filings in the Karen Read murder ...

On Friday, defense expert Dr. Daniel Wolfe, director of crash reconstruction at ARCCA, testified that damaged to Read’s SUV is not consistent with striking a person.

Karen Read retrial jurors could enter deliberations possibly this week as the defense’s case has already doubled its length from last year.

Things to know about the retrial of Karen Read in the killing of her police officer boyfriend The defense spent Friday morning questioning Daniel Wolfe of the accident reconstruction firm ARCCA.