The Karen Read case is back in court Thursday for arguments about expert witnesses and discussion of when her second trial will begin.Dog bite testimony in Karen Read caseNew special prosecutor Hank Brennan filed a motion recently asking Judge Beverly Cannone to exclude expert testimony about an alleged dog attack from Read's second criminal trial.

The judge in the Karen Read case on Thursday heard statements from a medical specialist to determine whether she’ll allow the physician to testify at a retrial that the wounds on John O’Keefe’s arm appeared to have been caused by a large dog.

Karen Read’s lawyers are pushing back on an effort to block one of their experts from taking the stand in her retrial in April.

The defense in the Karen Read case is fighting to have a dog bite expert testify in her retrial.Dr. Marie Russell<a class="excerpt-read-more" href=" More

At Read’s first trial, which ended with a hung hury, the medical expert told jurors that scratch marks on John O’Keefe’s arm appeared to come from a large dog.