Should i marry a murderer is the question at the center of a three-part Netflix docuseries that follows Dr Caroline Muirhead, a pathologist whose whirlwind romance ended in a murder confession. The series traces how her engagement to Scottish farmer Alexander “Sandy” McKellar, which began after a Tinder match in autumn 2020, turned into a covert effort to help police. The case involved the death of Tony Parsons, a cyclist McKellar admitted had been struck and buried years earlier in Scotland.
The confession that changed everything
The story begins with what looked like a fast-moving relationship. Muirhead met McKellar after a difficult breakup, and the pair became engaged within weeks, even as family members and friends had some misgivings. The turning point came when she asked whether anything in his past could affect their future, and he told her about a fatal hit-and-run involving a cyclist.
McKellar said he had struck Tony Parsons while driving home with his twin brother Robert after drinking at a hotel. The body was then buried in a peat bog on the estate where they worked. Police later asked Muirhead to help identify the precise location because the estate was so large, and she marked the spot with a Red Bull can.
Should i marry a murderer and the hidden risk
That decision placed Muirhead in immediate danger. She continued the relationship while secretly feeding police more information and recording conversations, because leaving would likely have exposed her role. The series presents that choice as both brave and punishing, showing how she was forced to balance fear, loyalty, and the need to keep evidence flowing to investigators.
One of the most striking details in the case is that the body was not discovered for three years. Parsons had been treated as a missing person while his family searched for answers, and the twinned cover-up kept the truth hidden until Muirhead intervened. In the middle of the story, should i marry a murderer becomes less a rhetorical question than a real-life crisis with no safe answer.
What officials and producers highlighted
Clare Beavis, series producer, said the missing part of the story was Muirhead’s testimony and her account of events, noting that the case had a big impact in Scotland. Director Josh Allott said he could not believe the story was real when he first heard it, describing the emotional and moral tension as impossible not to imagine in your own relationship.
The court later heard that McKellar admitted he behaved in an entirely selfish and cowardly manner. John Scullion KC, who represented Robert McKellar, said Robert became involved out of misplaced loyalty to his twin.
Where the case stands now
The case went to the High Court in Glasgow in 2023. Alexander McKellar pleaded guilty to culpable homicide and attempting to pervert the course of justice, while Robert McKellar also faced sentence after the cover-up was exposed. Alexander McKellar received a 12-year prison sentence in August 2023, and the documentary revisits the steps that led from confession to conviction.
Should i marry a murderer remains the blunt question the series keeps returning to, but the deeper story is about one woman’s decision to act when her fiancé revealed a killing. The next developments are likely to center on how the series shapes renewed public attention around Muirhead’s role, McKellar’s sentence, and the long shadow left by Tony Parsons’ death.
