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The Guardian - UK
The Guardian - UK
Entertainment
Lucy Mangan

Should I Marry a Murderer? review – the amazing woman who spied on her killer fiancé for police

Close up of a woman and a man snuggled close together in warm winter clothes
Caroline Muirhead and Sandy McKellar in Should I Marry a Murderer with the Highlands in the background. Photograph: Courtesy of Netflix © 2025

There are some truly amazing women in the world. The fact that this thought most often crosses my mind when I am watching a true crime documentary and hearing about the female victims of men’s crimes and learning how much suffering they endured while raising children, holding down jobs, keeping friends and parents happy and safe from knowledge that would upset or endanger them is so bleak that I’m going to put it away lest rage overwhelm me for good.

Let us focus instead on another name to add to the list of extraordinary women, again brought to public attention by the terrible act of a man she knew. The three-part Netflix series Should I Marry a Murderer? tells the story of pathologist Caroline Muirhead who, at the age of 29, meets and falls in love with a Scottish farmer she meets on Tinder. His name is Sandy McKellar.

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