Defense expert challenges prosecution theory in Karen Read trial, stating John O'Keefe's head trauma pattern doesn't match a fall on the lawn where his body was found.

Laposata was allowed to testify that she believes O'Keefe's arm injuries were caused by some kind of animal. However, she was not allowed to specify whether she thought that anima

The jury in Karen Read’s retrial could get the case by the end of this week after the defense’s last witness took the stand Tuesday.