You do realize that Italy already has tried and convicted and sentenced a man for this crime — and he is in a Roman jail right now.
You do realize that when Guede was convicted, his confession was that he was there with Amanda Knox and her boyfriend, and that the previously uninvolved judge who found Guede guilty also named Knox and her boyfriend as co-conspirators to murder, in a trial separate from those at issue in this current brouhaha?
Forensics showed more than one person killed her.