Karen Read will soon learn her fate in her second murder trial in the death of Boston cop John O’Keefe, her former boyfriend, with closing arguments scheduled for Friday, following more than 30 days of testimony.

Judge Beverly Cannone gave jurors off for the day Thursday, when the parties will arrive at 10 a.m. for a charging conference.

Testimony began on April 22 – after three weeks of jury selection empaneled 12 jurors and six alternates.

Dr. Andrew Rentschler, a biomechanical engineer who testified that O’Keefe’s injuries were inconsistent with an alleged vehicular strike, was the last witness called in the case.

Dr. Judson Welcher, an accident reconstruction expert, testifies, during the murder retrial of Karen Read in Norfolk Superior Court, Thursday, May 29, 2025, in Dedham, Mass. (Mark Stockwell/AP Photo, Pool)

Based on his testing, he said that he ruled out an impact with Read’s 2021 Lexus LX 570 SUV and O’Keefe’s arm as the cause of those injuries.

“They’re inconsistent with striking the tail light or being produced as a result of contact with the tail light,” he testified.

The prosecution claims that these minor injuries came from an impact with Read’s broken taillight after she allegedly drove into him on Jan. 29, 2022 and left him to die on the ground in the snow.

The defense denies a collision and has claimed the injuries came from dog teeth and claws.

Aperture’s Dr. Judson Welcher testified earlier, based on digital forensics of phone and vehicle data, that Read’s SUV reversed at 75% throttle right before O’Keefe’s last conscious interaction with his cellphone.