Sandra Birchmore’s case moved through two very different accounts of the same death. The first came from police reports describing suicide and no foul play. The second emerged years later as federal investigators reviewed the evidence against former Stoughton officer Matthew Farwell.

At his trial, medical examiner Dr. María del Mar Capó-Martínez testified that her office was never called to Sandra’s apartment and that the police reports did not frame homicide as a possibility. She initially found suicide by hanging. In April 2026, her office changed the manner of death to undetermined and the cause to asphyxia. Prosecutors say the earlier determination was based on an incomplete account. The defense says Sandra died by suicide and disputes the prosecution’s reading of the change.

William Farwell then testified under federal immunity. Matthew’s twin acknowledged he had been intimate with Sandra while on duty as a Stoughton officer, and he said his own relationship with her started in 2018 when she was an adult. Jurors considered a message describing Sandra as 15 when Matthew’s involvement with her began. William also testified about Matthew saying he wiped phone data. Each statement has to be judged for what it actually establishes.

Matthew Farwell has pleaded not guilty to charges alleging he killed Sandra and her unborn child. The jury, not the witnesses or commentators, must determine guilt.

Tony Brueski is joined by Bob Motta, Robin Dreeke, and Shavaun Scott to examine where institutional assumptions collided with later evidence. They discuss why the medical examiner’s information matters, how immunity can shape testimony, and why Sandra’s own history must not disappear beneath the arguments between the prosecution and defense.

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This publication contains commentary and opinion based on publicly available information. All individuals are presumed innocent until proven guilty in a court of law. Nothing published here should be taken as a statement of fact, health or legal advice.

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