An experience of mine today which reminded me of the girls:
I was walking to the library through a park and was at a intersection of paths in front of a parking lot. I decided to go in the opposite direction of a homeless man, which lead me towards a less public area. As I was walking I noticed that a pickup truck with a man + the trunk hatch down would stop until I caught up next to them, then would drive forward again, staring at me most of the time. After about a minute of this he sped into a parking spot where I would be walking by. I got that sick feeling and turned around, walking quickly in the direction of the homeless man instead. He just gave me a smile and went on with his day.
I'm not much older than Abby & Libby were, and I'm certainly not as strong/athletic as them. This was in a fairly public place where I had cell reception and the homeless man could hear me scream if anything went wrong, yet I was terrified and had that gut reaction to get away.
I can't imagine how terrified and hopeless they felt, and all they had to turn to was their own strength and recording BG.
It also showed me how wrong my sense of judgement is. We assume that the scariest looking person is the one out to get us, but it is very likely a clean cut guy respected within the community. Just thought I'd share before I head back on that path home[/QUOTE
This is way out in left field but your comment made me think what if the police are lying to the general public and BG is not the killer? What if like in your example the BG was the creepy guy and the killer depicted in the new sketch was simeone they knew and trusted who was somewhere near their end of the bridge and saw their panic and replied with "guys follow me down the hill away from him"
Not likely but at this point who knows?