Karen Read’s second murder trial entered its eighth week Monday, with more testimony from a defense accident reconstruction expert who says Read’s SUV never hit John O’Keefe.

On Friday, Daniel Michael Wolfe showed jurors crash-test videos he created to simulate how Read's Lexus could have struck O'Keefe and what damage his body would have caused to the vehicle at different speeds.

Wolfe said that the shattered plastic patterns created on the car’s taillight during the tests did not match the cracks found on Read’s car.

Catch up: Karen Read trial: Can crash reconstruction expert help the defense?

Prosecutors accuse Read, 45, of backing into O’Keefe, her Boston police officer boyfriend, in a drunken rage and then leaving him to die in the snow outside the home of another cop after a night drinking with friends. She has been charged with second-degree murder, vehicular manslaughter while intoxicated and leaving the scene of a collision resulting in death.