Police are launching a fresh appeal for information about Andrew Gosden who disappeared ten years ago.
Speaking on ITV this morning, Andrew's father Kevin Gosden said it is an "endless nightmare" living in limbo.
His family say the the disappearance was "totally out of character" for Andrew.
What happened in 2007?
Fourteen-year-old Andrew Gosden vanished after leaving his home for school in 2007.
The only sighting of him since has been on CCTV footage at Kings Cross station in London.
He withdrew £200 from his bank account before getting on the 9:35am GNER service to London. After getting on the train it is not known where he went.
Despite hundreds of potential sightings across the UK, when they were investigated none were Andrew.
Five years ago, images of were produced to show what Andrew may look like as he grew up and changed over the years.
Speaking on ITV this morning, Andrew's father Kevin Gosden said "someone somewhere must have encountered him".
Last year, a charity which helps families of missing people teamed up with music stars to release a single to fund the search for missing people.
The original song, ‘I Hope’ was inspired by the words of Kevin Gosden.