THESE ghostly images are said to be evidence of the increasingly malevolent spirit Mr Boots, who stalks the Blair Street underground vaults.
The apparition earned its nickname from the many unexplained reports of heavy footsteps heard since the vaults opened nearly 20 years ago.
But it appears the resident ghoul is getting miffed by all the visits and has started to vent his anger. Last week, a tourist suffered a bang to the head in a paranormal attack. Mercat Tours staff even had to fill out an incident report on the injury.