It's not a case of being so sure, I think it's a case of not rushing to call people murderers on the basis of half lies, Chinese whispers, and the internet. I know you're not calling them murderers, you just like to continually point to things that raise doubts about their innocence.

If there was real evidence out there, the Portuguese police who seemed pretty keen on it being them at one point, would have made it happen by now. I'n not saying it couldn't possibly be them, but the moving parts involved in pulling something like this off, is certainly beyond most people.