Yes but in most cases there aren't two similar looking people, this case was unusual because there were.
I'm not just theorising here, I'm also working from visual evidence at the scene.
If you have visual evidence of the scene that night then you have the rest of us at a disadvantage.
FP -saw this person when KM was inside 5a on night of 3rd
DP -saw said person presumably just after GNR arrived & SB had arrived - so at OC reception or 5a?
ROB- "That he saw Murat for the first time at this moment in the Rua Silva in front of the apartment where the events occurred, near to the parking area."
RO -'Erm well most of the time I spent talking to Jane and sort of checking on Grace, erm and saw, I remember the nannies coming up to talk to us, some of the Mark WARNER nannies and they'd been searching and looking round the village and sort of you know, rallying friends and people that they knew, erm I mean we were waiting for the Police for a lot of that time cos they didn't turn up for ages, erm and, and then when the GNR did arrive, erm you know, they came to say hello and erm Sylvia was there with them and so was Robert MURAT, erm there were other people sort of milling around in the background but Sylvia introduced herself and so did Robert MURAT, erm I mean he just introduced himself to me as Robert and we shook hands, erm and then sort of remember talking to somebody from I think, think (inaudible) one of the apartments on the floor above, sort of an older guy, kind of said oh he went missing when he was a child for about ten days and he, and he, you know he came back again sort of thing, well he was, I can't remember whether he said he was taken or, it wasn't that he'd run away, I mean maybe he sort of too young to remember or something but he said that he was missing and he'd reappeared, erm and yeah just and then erm after the Police arrived, erm I mean we were just you know talking about what we should do and then I thought of ringing James LANDALE and you know seeing if we could get it on the news, erm and made those phone calls, erm and then the PJ arrived"
If the PJ believed RM & his alibi, then why did they call 3 witnesses back for a "confrontation"?