Jamie-Leigh Brown, 21, was exploring the empty corridors of St Thomas's Hospital, a former Victorian workhouse, in Stockport, when she took eerie photo.
The decorator was so unnerved by spooky footsteps above them - even though the building has no working stairs - that she and her team of amateur ghost-busters didn't check the image at the time.
The paranormal enthusiasts ran from the building in terror, but when Ms brown developed the photo later she found a chilling surprise - a spectral doctor lurking in the background.
She said to The Sun: "It freaked me out.
"It's standing in a lift shaft. It's really creepy to think my friend was just heading towards the area where the ghost was.
Read Full Story: Mirror UK