Should I Marry A Murderer is a 3-part true-crime documentary series streaming on Netflix. A few weeks ago, when The Drama, starring Zendaya and Robert Pattinson , released in theatres, it divided the internet. There were arguments about how Rachel was the real villain, how Charlie had been a bully in his teens, and how Emma’s actions, which were heading towards a dangerous path, were just thoughts. Nevertheless, it started a debate on the internet – What would you forgive your partner for? As these debates usually go, there was obviously no conclusion, but one thing was clear; every relationship has a dealbreaker. Dr Caroline Muirhead, the subject of Netflix’s new documentary series, Should I Marry a Murderer?, found that dealbreaker days after getting engaged to Sandy McKellar when he confessed that three years ago, he and his brother Robert had killed a man named Tony Parsons, buried his body, and never told a soul about it.…