The question of whether to marry a murderer is at the heart of the new documentary ‘Should I Marry a Murderer?’, which premiered on Netflix on April 29, 2026. This gripping true crime story follows Caroline Muirhead, a forensic pathologist in Scotland, who found herself entangled with Sandy McKellar, a man she met on Tinder—only to discover he had confessed to killing cyclist Tony Parsons.
Caroline’s journey began when she was 29 years old and recovering from an eight-year relationship. The emotional turmoil led her to Tinder, where she met Sandy. Their romance took a dark turn when he admitted to his involvement in a hit-and-run that claimed the life of 63-year-old Tony Parsons, a cancer survivor. “What’s the worst that could happen?” Caroline thought, unaware of the nightmare that awaited her.
As she learned more about Sandy’s dark past, Caroline decided to take action. She assisted police by recording conversations with him, gathering crucial evidence for their murder investigation. In one chilling moment, she even marked the burial site of Tony Parsons with a Red Bull can—a grim yet necessary step in unveiling the truth.
Ultimately, both Sandy and his twin brother Robert were arrested for their roles in this tragic case. In 2023, Sandy was convicted of culpable homicide and attempting to defeat justice. Caroline faced immense emotional distress throughout this ordeal and struggled with substance abuse as she grappled with her choices.
Despite everything, Caroline made the brave decision not to marry Sandy. Instead, she chose to support law enforcement in bringing him to justice. After extensive therapy, she has since moved to the coast and is now in a new relationship, finding hope for the future. “For the first time in several years, I now have hope for the future and the freedom to begin the next chapter of my life,” she shared.
Key facts:
- Caroline Muirhead helped locate Tony Parsons’ body in 2020.
- Sandy McKellar confessed three years after the hit-and-run incident.
- Caroline recorded conversations as evidence for police.
- Sandy was convicted in 2023; Robert received a 63-month sentence for his role in covering up.
This documentary sheds light on difficult questions about love and morality. It showcases how one woman’s courage transformed her life while navigating through unimaginable circumstances. The impact of her choices continues to resonate as viewers reflect on their own values and relationships.
