The spooky snap was taken at a building hailed as one of Britain's most haunted.
Took photo ... Kevin Horkin
And the shadowy girl appears to be on the first floor, in what used to be a magnificent banquet hall.
The floor in that room crumbled away years ago, meaning there is nothing for a person to stand on.
Company boss Kevin Horkin took the photo at Gwrych Castle in Abergele, North Wales, but only saw the ghostly figure when he downloaded his pictures later.
Kevin, 48, said: "I did feel a presence there. It was a cold day when I visited, but it seemed warm near the building.
"There seems to be a sense of tragedy there."
Kevin, believes the figure is someone who once lived at the castle. He plans to investigate further with a ghost-hunting team.
The North Wales Paranormal Research Group says many sightings have already been recorded at Gwrych.
The castle, built in 1819, has been derelict since firstname.lastname@example.org