Credit: Netflix

Netflix dropped a three-part documentary, Should I Marry a Murderer?, directed by Josh Allott on April 29th, and hell broke loose on the Internet.

While every Netflix release unleashes a wave of intrigue, the interest surrounding the latest limited series stems from its true origins, in which a woman revisits the horrors of almost marrying a man with a murderous past.

The Netflix documentary, Should I Marry a Murderer?, follows forensic pathologist Dr Caroline Muirhead, who came to learn about her fiancé, Alexander “Sandy” McKeller’s murderous history when she least expected anything of the sort. The true-crime story is set in Scotland, which details the Glasgow native’s five weeks of whirlwind romance with McKeller.

Muirhead was 32 years old in 2020 when she stumbled across McKeller on Tinder while still recovering from an abusive relationship. Since she was quite volatile at the start of their relationship, discussions around marriage escalated within a month of being together.

But before making things official, in late November 2020, Muirhead asked McKellar if there was anything she had yet to know about him that could “hinder” their future. She reportedly asked the question just as a police car happened to pass by. “I asked him, ‘What is it? What is going on? What is it you’re not telling me?’” she recounted to The Scottish Sun in 2023. It was then that she started noticing McKellar’s panic attacks.

McKellar then confessed his “horrible” secret to Muirhead – a crime that he had gotten away with for years. The events date back to September 29th, 2017, when McKellar was speeding in a car with his twin brother, Robert, in the Scottish Highlands, following a dinner with his hunting group at the Bridge of Orchy Hotel. At the same resort, ex-Royal Navy Officer Tony Parsons also stopped by while on a charity cycling tour to mark his fight and survival against prostate cancer.

Parsons intended to complete the 100-mile fundraising ride through Argyll and Bute at one go, refusing to stay the night at the hotel. But he did stop for a coffee at the resort before resuming his cycling despite a heavy rainstorm. That night, at 23.00, the McKellar brothers crashed into Parsons on the A82 near Bridge of Orchy. However, instead of assisting him in his recovery and taking him to the hospital, the twins left him to die.

Authorities estimated that Parsons passed away 30 minutes after the crash, suffering severe blunt force trauma with multiple rib fractures. However, since his death was not immediate, the McKellar brothers had the time to alert the emergency services.

After leaving the crime scene, the twins drove to their house on the Auch Estate near Tyndrum village. But they returned later in another vehicle, disposing of the body and belongings in a peat bog primarily used to discard dead animals. They hid the bicycle behind a waterfall nearby, destroyed Parsons’ phone and SIM card, setting his wallet and helmet ablaze to get rid of all the evidence.

It wasn’t until December 27th, 2020, that Muirhead reported McKellar to the authorities, alleging she spent an entire month gathering information from him about the details of the crime. While there’s a lot more to the story that you’d like to discover for yourself, to do the same, tune into Should I Marry a Murderer? now streaming on Netflix.