And even staff at the Lace Market tourist attraction – who are used to regular "ghost" sightings – think there could be something in it.
The image was taken by Matty Bamford, who visited the Dr Massey exhibition about crime and punishment about a year ago.
It was only when flicking through his archives this week that he noticed the eerie figure and sent it to museum staff.
Deputy marketing manager
Faye Rollinson said: "I couldn't see anything at first but I wasn't looking in the right place."Matty sent it again with a circle around it and I could see a face.
"I was looking on my phone
so I zoomed in and you can see what looks like an old person's face with sunken eye sockets and grey hair."Ms Rollinson said the museum receives up to 10 photographs a year from visitors who believe they have spotted a ghost.
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