Just some thoughts and intuitions - absolutely nothing but that. Haven't even made it to the opinion level yet, so skip this if you want more hard facts :
1) The meth problem in Carroll County, which is public knowledge there, may have been a factor in this case. By that, I mean someone who acted while under the influence. Especially if the POI was a user who was older but still able to hustle down a steep hill and walk over to the cemetery area. Maybe the dealers are cooperating, and maybe they're not. Just a thought.
2) The Snapchat picture of Abby -
http://www.websleuths.com/forums/sh...-13-Feb-2017-1/page11&p=13145344#post13145344 - has always bugged me because it just doesn't seem like the kind of "best picture" that I would be uploading to SM. Abby is looking very indrawn, and not very happy, almost as if she's shying away from something or someone. She's not being zoomed in to capture her face more. But I am totally unfamiliar with Libby's other pictures, so this could just be a pose that struck her as artful. But it bugs me.
3) My initial response to the news of the girls' deaths was that it was someone who is an adult with some standing in the community, perhaps within the school system. Someone who would not be suspected by his peers or family. Then my brained raced over to the other end of the spectrum and thought it would be someone who was on the low end of the social scale that knew someone in Libby's family. These were not based on any hard facts, just initial responses from the clubhouse in my head.
4) The audio of the BG sounds to me exactly that that of a parent who is used to telling kids to do something more than once, and knows how to convey that he means business the second time. Or a person who has had dogs that needed training. As others here have noted.
5) The only reason I can think of that the girls would have been so far down that rotting and dangerous bridge (it can't be fun to walk across it with all those gaps) would be to meet up with a SM fake. A fake teen. It might have been the closest they could get to meeting someone "out in the open" for safety, like a food court inside a mall. Maybe they assumed they'd be safe up there in full view of both approaches and from the bottom of the bridge. It's not likely that they suspected someone could actually maintain his balance and assault them up there. Except that the POI in this case most likely had a weapon. And that would crush their assumption of safety. We can't even address this point, though, unless we know where they were expecting to be picked up at 3:30pm, which would tell us if crossing the bridge in one direction would lead to the pickup spot.
6) Why hasn't anyone who KNOWS him turned him in yet (if that's the case)? I keep thinking about the line from the movie The 6th Sense: : "They only see what they want to see." It can take years (!) for a family member to come to the realization that one of their family is "not normal". That's just how humans are. It can take time to turn an aircraft carrier around.
Just thinking out loud and not assuming anything, really. I do support the LE effort and hope they bag this guy soon.