The judge in the Karen Read case is allowing a retired California emergency room doctor to testify in her upcoming retrial. 

Dr. Marie Russell testified in Read's first trial that the wounds on the arm of her Boston cop boyfriend John O'Keefe were likely from a large dog. 

The prosecution wanted her banned from the second trial, saying the arm injuries happened when Read backed her SUV into O'Keefe in Canton and killed him. 

Read contends she dropped O'Keefe off at the home of another Boston cop where his body was found on the lawn in January of 2022, and that people there killed him.