Ghost hunters investigate eerie face in window

Could this spooky face be the ghost of Jason Griffith's grandfather?

After seeing the face in photos he took at his grandparents' old house in Wolverhampton, the amateur ghost hunter decided to find out.

Griffith and his friend, Steven Richards, investigated the strange knocks, noises and chilly presence some of Griffith's relatives have reported seeing after Alan Price died two years ago.