What would you do if the person you love told you they had killed a man?
It's easy to imagine you would act rationally, morally and without hesitation but Should I Marry a Murderer?, Netflix's new true crime documentary, suggests that in real life, love complicates everything.
In 2017, drink-driver Alexander McKellar - known as Sandy - struck and killed charity cyclist Tony Parsons in Argyll and Bute, Scotland. McKellar and his twin brother Robert then buried Parsons' body.
It lay there undiscovered for three years until McKellar's new girlfriend, Dr Caroline Muirhead, found out the truth and led police to the shallow grave.
When director Josh Allott first heard of the story he "couldn't believe it was real".
