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- calendar_today October 31, 2026
Background: Tragedy in Massachusetts
In 2021, Sandra Birchmore, a 23-year-old woman from Massachusetts, was found dead in her home. Initially, local police ruled her death a suicide. This decision was met with skepticism from Birchmore’s friends, who told officers that she had recently learned about her pregnancy and was excited about the news.
Matthew Farwell: From Detective to Defendant
The focus soon shifted to Matthew Farwell, a married police detective with whom Birchmore had a relationship. According to friends, Farwell was upset about the pregnancy. Five years after her death, Farwell, now 40, faces federal charges for allegedly killing Birchmore and staging her death to appear as a suicide. Prosecutors also accuse Farwell of having started a sexual relationship with Birchmore when she was 15.
Original Police Investigation Under Scrutiny
The original police investigation, now under intense scrutiny at trial, involved state police troopers working in the Norfolk County district attorney's office. Federal prosecutors argue that investigators never seriously considered any possibility other than suicide, interviewing Farwell briefly and without taking notes, checking for injuries, or sampling his DNA. Investigators looked at Farwell’s cellphone only after he had deleted his text exchanges with Birchmore. Assistant U.S. Attorney Torey Cummings told jurors that police quickly assured others, including the medical examiner and Farwell’s family, there was “no foul play” and sought swift closure on the case.
Key Testimonies and Text Messages Presented in Court
In court, text messages exchanged between Birchmore and Farwell were read, revealing the nature of their relationship and its beginnings when Birchmore was 15 and Farwell was 27. At one point, they had exchanged over 40,000 texts, including sexually explicit communications about strangulation and dominance.
Leslie Davis, one of Birchmore’s friends, described volatile arguments between the two and recalled Birchmore’s claims that Farwell had pushed her to the ground. Birchmore had wanted Farwell to acknowledge paternity of her child, a point of contention between them.
Federal Forensic Evidence and Competing Narratives
The FBI began investigating Birchmore’s death in 2023, partly at the urging of a former deputy chief at the Stoughton Police Department, where Farwell worked. Federal experts, including Dr. William Smock, concluded that Birchmore was strangled with a duffel bag strap and had struggled before death. Surveillance footage confirmed Farwell entered and exited Birchmore’s building within the critical time frame on February 1, 2021.
The prosecution argued that Farwell killed Birchmore to keep their relationship secret and silence her permanently. Farwell’s attorney, Kimberly Stevens, maintained that while Farwell admitted to an affair, he did not kill Birchmore, presenting evidence about Birchmore’s mental health history and financial difficulties. The defense asserted that Farwell only visited Birchmore to end their relationship.
Changing Cause of Death and Other Revelations
Initially, the state medical examiner—relying partly on police input—determined Birchmore’s death to be a suicide. This has since been revised to “undetermined.” A paternity test later revealed that Farwell was not the father of Birchmore’s unborn child; rather, the father was Army recruiter Jason Pickard. Pickard testified about his own relationship with Birchmore and stated she told him her involvement with Farwell began when she was underage.
Trial Progress and Next Steps
As of this week, prosecutors concluded their case. The defense was scheduled to call witnesses before the case goes to the jury, possibly as early as next week.
Related coverage
Source: abcnews.com.
