This spooky snap could be proof of a ghostly presence in a 600-year-old building that's long fascinated ghost hunters.
Rye House Gatehouse in Hertfordshire has drawn the attention of spirit seekers before, but this new image shows who they think may be the ethereal manifestationof the Night Watchman from the 17th century.
The pictures, taken by Tracey Jenkins, appear to show a mist-like presence on the right of the image.
North London Paranormal Investigators say that they've long suspected the site to be haunted - and this has helped their case.
Micky Gocool, lead investigator, said: "We're not in the business of just trying to spook people.
"We always look for the rational and logical explanations, so we deliberately conducted our investigations at Rye House Gatehouse during the daytime.
"I've been conducting paranormal investigations for 25 years now and I'm confident in saying that this is a site with activity."
The park's senior north ranger Gareth Winn said: "It was taken by a member of the public as part of a paranormal investigation.
"I was there at the time. It was interesting because the room where it was taken was where we get a lot of activity.
"It affected two of the mediums who were there and they ran out of the room to vomit.