Arthur is 15 and he has by all accounts, run away. He left a letter for his parents and has not taken his passport.
His family have heard nothing from him. They have physically searched different places etc and are currently in the news making appeals.
And the family has since discovered that, the night before he left home, Arthur was on his Facebook account and may have been in contact with an unknown person. They and the police have pleaded with the social network company to release this information but, to date, Facebook has refused.
His mother Caroline is at pains to explain why she believes this Facebook link is so vital.
'Arthur left without his passport or his phone and only £350,' says Caroline. 'Normally, kids are tracked in 45 hours either by their phone or on CCTV, but what's extraordinary is it's now been nine-and-a-half weeks and there's been no contact from him at all. No sightings. No CCTV footage. We visited towns along the South Coast, we've been to Manchester, Liverpool, London.
'We've contacted homeless organisations, coach stations, hospitals, train stations — anywhere we can think of to put up posters, but we've heard nothing.
'That's why this Facebook link is so crucial. We just need them to release information to the police so they can see if he's been in contact with someone.'
Should Facebook be forced to reveal the in formation to the police?
I think they should.