Cop accused of murdering pregnant Sandra Birchmore — what does his twin brother know?

The Federal murder trial of former Massachusetts police officer Matthew Farwell is entering day four with shocking new allegations emerging. Farwell is accused of killing 23-year-old Sandra Birchmore after grooming and sexually assaulting her when she was underage and in the police department’s explorers’ program. But who else in the department had information — and what does Farwell’s twin brother know? In this episode of Brian Entin Investigates, we take you inside the courtroom with the latest on the twisted case.