Thinking, I will confess that very early on in Allison's disappearance, I wondered if there'd been some self harm and GBC had somehow tried to spare everyone its discovery and maintain his wife's privacy and dignity. For obvious reasons, I no longer think that's even remotely possible. I really truly have tried, mainly for the sake of those little girls, to nut out an alternative scenario whereby someone/thing else is responsible, based on the admitted evidence. But I just can't. I always hit a wall with one or other known/admitted fact. The case is, of course, circumstantial. There may well be evidentiary 'holes', the reasons for which we may never know, but to my mind, the essential elements of the crime have been proven and proven against the accused, beyond reasonable doubt. Other minds will differ and that is the beauty and the beast of our system.