Friday’s episode of NBC’s “Dateline” shed light on the case of Sandra Birchmore , a pregnant 23-year-old teacher’s aide who was allegedly killed by a Stoughton police officer who had groomed her since childhood.

“ The Betrayal of Sandra Birchmore ” featured interviews with Birchmore’s family members, her former boss, and Stoughton Police Chief Donna McNamara. Through her loved ones’ eyes, viewers had a chance to see the revelations that led a closed-case suicide to be blown open and ruled a homicide years after her 2021 death.

Former Stoughton police officer Matthew Farwell is the main suspect in Birchmore’s murder, according to officials. In August 2024, he was arrested and indicted by federal authorities on one count of killing a witness or victim, to which he pleaded not guilt

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