I was wondering, if he was in fact in any way involved, why PH would tell Mari that Shannan had spent the night there, (working on the assumption that he did indeed tell her that, which I personally believe to be true). One would think that would be a stupid thing to do, because why would you choose to alert anyone that you had any possible involvement if you didn't have to (if you had something to hide)? The only thing I can think of would be if Shannan had in fact been at his house, for whatever reason, even briefly, whether it was nefarious or not (perhaps, as some have suggested, that 15 minute mystery trip, to get drugs or whatever) and since when he called Mari he didn't at that point have any idea what anyone knew, he might have said it preemptively, to cover himslef in case they searched his house and found evidence she had been there. Then finding out no-one knew his involvement, he realized he hadn't needed to do that and so denied saying it. Or is that far-fetched?! It's the only thing I can think of that might explain why he would do that.
This brings me to a question: once the police arrived in Oak Beach after GC called them, I would expect in a situation like that that they would try to determine what house the female caller had come from, even if it meant going door to door. Once finding the house, I would also expect that they might ask (JB) if it would be okay if they took a quick look around. Surely they had connected Shannan's call with GC's. I realize Shannan had been seen running away and the assumption would be she was no longer there, and that they didn't yet know she had gone missing (they didn't know she hadn't either) but I still think under the circumstances - they had received a frantic 911 call from there - it would be reasonable. Did they do that? I doubt it. I'm just wondering what actually happened when the police showed up. And shouldn't they have asked to see the security tape right then and there? I wonder who the police officer was who answered that call and how he feels about it now.