The thing that blows my mind is that the family has kept so quiet. I know there's some reasons why, but really??? It must be something incredible that is keeping them quiet.
To be clear- I do not think any part of Williams family had a part in his disappearance. They were all cleared very quickly.
To leave poor William out there, even for the sake of others is truly very disciplined.
From what I've seen his family doesn't seem so 'straight' but as far as i can see they seem to be complying to the official story.
If this was my son. I would be camped in town and throwing stones at the POI continously. Unless I knew of a reason not to.