Could this be evidence of ghosts in a Shropshire castle?
Video journalist James Shaw spent an evening at Whittington Castle, near Oswestry, with ghosthunting group Dead Haunted Nights, run by Phil Whyman, from Living TV's Most Haunted.
And he found evidence that ghosts may - or may not - exist.
One of the most compelling pieces of footage is a light that travels across a landing and appears to disappear into a wall.
The shape appears to change as it moves across the screen and was only discovered when the tape was being reviewed.
The group also heard stone-throwing noises as it attempted to contact spirits near an old dungeon.
So could our video reveal more about the existence of ghosts or has the light really been playing tricks?
Watch our video and find out.