Dighton Police Sergeant Nicholas Barros testified that the right rear taillight of Read's Lexus SUV - which prosecutors say killed her boyfriend John O'Keefe - was not completely damaged before it was

Karen Read's defense began to take shape this week. Here's what you need to know from the seventh week of her retrial.

Forensic pathologist Dr. Marie Russell returned to the stand Tuesday morning for cross-examination before the defense called Dighton police Sgt. Nicholas Barros as their next witness.

He suggested the piece missing from the plastic cover on Read’s taillight was about six inches long and three inches wide. Defense attorney Alan Jackson displayed a photo of the SUV’s taillight missing a large portion of its plastic as it sat in police custody.

Barros described seeing a hole about the size of a dollar bill before State Troopers seized the Lexus from Read’s parents Dighton home.

Michael Proctor's inappropriate text messages about Karen Read and expert testimony about dog bites took center stage this week.

Russell was among the first witnesses to testify about Chloe's involvement in O'Keefe's death. During Read's first trial in 2024, Chloe's owner, Nicole Albert, said the dog was sent to a farm in Vermont sometime during the investigation into O'Keefe's death. Albert is the sister of key prosecution witness Jennifer McCabe.

Dighton Police Department Sgt. Nicholas Barros, who saw Karen Read’s Lexus SUV get towed away from her parents’ Dighton home following the death of John O’Keefe, took the stand Tuesday after the defense’s dog bite expert was dismissed.

Karen Read‘s defense took a new approach in their attempts to win her freedom this week, calling for a mistrial on Tuesday. That’s just the beginning of what turned into a very explosive day of testimony inside the courtroom.

DEDHAM, Mass. — A dog bite expert was cross-examined Tuesday by prosecutors in Karen Read 's second murder trial, as the defense argues Read was framed for killing her boyfriend, Boston Police Officer John O'Keefe, and that wounds on his arms came from an animal.

Dighton Police Sgt. Nicholas Barros uses his fingers to indicate the size of the missing tail light fragment while testifying during the Karen Read murder retrial at Norfolk Superior Court

Norfolk Superior Court released a number of requests by both defense attorneys and prosecutors that could shape the way the jury deliberates about Karen Read's fate.