Matthew Farwell’s twin testifies against his brother over the death of Sandra Birchmore

Matthew Farwell, a former Stoughton police officer, stands trial in federal court for the 2021 murder of Sandra Birchmore, a 23-year-old pregnant woman found dead in her Canton apartment. Farwell's twin brother, William Farwell, testified Monday and Tuesday with immunity that both brothers had sexual relationships with Birchmore, and that she appeared happy about her pregnancy and showed no signs of suicidal intent. Matthew Farwell pleads not guilty; federal prosecutors allege he killed Birchmore to prevent her from reporting his crimes, including having sex with her at age 15, while the defense argues she took her own life.