Matthew Farwell reportedly asked Sandra Birchmore for a key to her apartment in the days before she died. According to prosecutors, Sandra told friends the former Stoughton detective had abruptly begun treating her more kindly after a police disclosure threatened to expose their long relationship. 

The federal government alleges that Farwell had been involved with Sandra since she was underage after meeting her through a Stoughton police youth program. A friend called the department in January 2021 to disclose that relationship. Prosecutors say he reacted angrily and later changed course. They say that change was meant to lower Sandra’s guard. Farwell denies killing her. 

Robin Dreeke joins the listener questions about behavior, opportunity, and investigative judgment. How much significance should anyone put on a sudden display of warmth? What can investigators fairly infer from security footage showing a hooded and masked visitor entering an apartment building? And how should those pieces be considered alongside the defense’s contention that Sandra died by suicide? 

The questions also turn to Massachusetts investigators. Prosecutors have criticized the original death investigation and its limited follow-up. The state medical examiner originally ruled suicide, but revised the manner of death to undetermined in April 2026. A family-retained pathologist reached a different, more definite conclusion: strangulation. 

This federal trial concerns a specific defendant and specific charges. Listeners are also asking what responsibility remains for institutions whose first decisions shaped the case for years. We examine the evidence without treating prosecutorial allegations as a verdict. 

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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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