Karen Read's defense concluded with expert witness Dr. Andrew Rentschler testifying that Boston cop John O'Keefe's injuries ...

For weeks, all appearances were that prosecutors would call witnesses as part of a brief rebuttal case in the Karen Read ...

The finish line is in sight for Karen Read ’s retrial as ARCCA biomechanics expert Andrew Rentschler, the last defense ...

Karen Read's defense could rest its case on Wednesday after biomechanist Andrew Rentschler from ARCCA is expected to complete ...

After the defense wrapped up its questioning of Rentschler, Prosecutor Hank Brennan told the judge he did not plan to call ...

A biomechanist is expected to return to the stand in the Karen Read retrial today, the 31st day, with testimony to help the ...

There were tense moments in court as Karen Read's lawyer Alan Jackson and special prosecutor Hank Brennan argued about ...

A biomechanical engineer testifying for Karen Read's defense retakes the stand Wednesday morning. Follow live updates.

The Massachusetts woman's murder trial has transfixed the nation centered on the question: How did Boston Police Officer John ...

The defense expert described his own testing methods, which included the use of a crash-dummy arm, calling it "the gold standard" for such analyses.

The Karen Read trial​ is back in a Massachusetts courtroom today for a full day of testimony from defense witnesses.

Karen Read is charged with second-degree murder, manslaughter and leaving the scene of a crime in the death of John O'Keefe.