The high-profile Karen Read trial is back in Norfolk Superior Court in Dedham, Massachusetts on Thursday for a 16th day of witness testimony. The day began with a Massachusetts State Police forensic scientist back on the stand to finish her testimony about evidence processing.

Canton Fire Department paramedic Timothy Nuttall shows how to do a Carotid Pulse at Karen Read's second murder trial at Norfolk Superior Court on Tuesday, April 22, 2025 in Dedham, Mass. Photo by Stuart Cahill/The Boston Herald via AP, Pool

The case out of Dedham, Massachusetts, has turned into a yearslong whodunnit legal saga that has captivated true-crime fans across the country.

Several new attorneys, Karen Read’s media interviews and the firing of the lead investigator have combined to change the dynamics of her retrial.

Massachusetts State Police Sargent Yuri Bukhenik was back on the stand for a third day in Karen Read's re-trial. Read is accused of backing into her Boston police officer boyfriend John O'Keefe with her SUV in January 2022. Monday’s questions focused on former Massachusetts State Trooper Michael Proctor.

Prosecutors argue that flirty text messages presented to the jury last week opened the door to testimony about what happened during the vacation about one month before John O'Keefe's death.