Greyfriars Kirkyard, the burial ground adjoining Greyfriars Kirk in Edinburgh's Old Town, has served as a cemetery since 1561 and is one of the oldest surviving public graveyards in the city. Within its walls stands the Black Mausoleum of Sir George Mackenzie of Rosehaugh, the Lord Advocate of Scotland (1677–1689), whose nickname 'Bluidy Mackenzie' derives from his role in the brutal prosecution of Scottish Covenanters — Presbyterians who refused to accept royal control of the church. Between 1679 and 1688, approximately 1,200 Covenanters were held in a walled prison enclosure adjoining the kirkyard, known as the Covenanters' Prison, where many died of exposure and starvation, while others were tortured or executed. Mackenzie was personally responsible for many of those deaths.
In December 1998, a homeless man named Colin Grant reportedly broke into Mackenzie's tomb seeking shelter, fell through the floor into a burial pit, and fled the kirkyard in terror. Within days, the first reports of paranormal attacks began to emerge from visitors near the mausoleum. Tourists walking past the Black Mausoleum and into the adjoining Covenanters' Prison began reporting sudden bruises, cuts, welts, scratches, cold spots, unexplained nausea, and the sensation of being struck or choked by invisible hands. Over the following years, hundreds of such reports were logged — particularly during the after-dark 'City of the Dead' tours led by local guides. Several visitors have required hospitalisation, and at least one lawsuit has been filed.
Paranormal investigator Jan-Andrew Henderson catalogued over 450 documented attacks in his 2001 book 'The Ghost That Haunted Itself,' and Edinburgh Council briefly locked the Covenanters' Prison section to the public after the reports peaked. Skeptics have proposed mass suggestion, claustrophobia, and the psychological effect of tours conducted at night. Advocates argue that the pattern of physical injuries is inconsistent with suggestion alone and that the site continues to produce incidents decades after Grant's disturbance of the tomb.
Greyfriars is today considered one of the most well-documented poltergeist locations in the United Kingdom and one of Edinburgh's defining ghost stories.