Jurors in Karen Read’s second murder trial traveled Friday to the site of John O’Keefe’s death in 2022. Read is accused of killing O’Keefe, her boyfriend and a Boston police officer, with her vehicle and leaving him in the snow outside a house in Canton,

Karen Read pleaded not guilty to murder charges in the death of Boston police officer John O’Keefe and is facing a retrial after a jury was unable to reach a verdict last year.

After opening arguments from Read’s defense attorney Alan Jackson and the Commonwealth’s special prosecutor Hank Brennan, a key witness was called to the stand.