Yes.
Are you expecting one of the protagonists you suspect of finally confessing or do you think there is other tangible evidence that has been gathered or still out there to be gathered? If so, I would be curious to know the nature of such evidence. We can rule out CCTV can't we? We can rule out the only known eye-witnesses that suggest ed perhaps it was one of the key protagonists (the police are no longer pursuing this line of enquiry), we can be fairly sure if a raft of new witnesses placing the protagonist in PdL acting suspiciously had come forward then the protagonist in question would have to be made an arguido in order to be questioned about it, something which is unlikely to be achieved without being sensationally leaked to the world's media, a body dug up now is unlikely to contain any forensic clue pointing to the protagonist(s) without there already being a valid reason for it to be there, and so what does that leave us..?