Greyfriar’s Covenanter’s Prison was a grim spot in Edinburgh where Covenanters, who fought to protect Presbyterianism, were imprisoned, starved, and killed. Survivors endured harsh conditions, with minimal food and exposure to the elements. Some were executed, some escaped, and others were sent overseas but tragically perished in a shipwreck. The cruelty inflicted by figures like "Bluidy Mackenzie" led to lingering ghost stories, with tales of his spirit haunting the prison grounds.