I took a couple days completely away from my computer so I could do some personal and household chores. I came back today to find some excellent, thoughtful discussion. The one thing is I would like to know is if the killer gained control of Abby and Libby at the same time or one before the other. Although I do have a problem with spatial issues, I do think Abby and Libby were somewhat separated at times on the bridge. How far apart were the girls when Libby took the Snapchat photo of Abby? I wonder if the killer gained control of Abby first and used her as leverage to gain control of Libby. Perhaps, further audio recording would answer that. Best young girlfriends aren't likely to abandon each other. I am wondering if he already was controlling Abby when the "Down the hill" was said.
I like to keep things simple so these are my current thoughts:
The killer has detailed knowledge of the trails and bridge area. This comes from living in the area or being in the area often. I don't think this is the killer's first violent act. Maybe first murder, but I think he has committed violence against a female(s) before. Domestic abuse comes to mind. This person is self-confident. He came prepared to kill with whatever tools he used to do the murders, he killed, he left, and is still not arrested for this crime 2 3/4 years later. I think he was loitering and saw Kelsi drop off the girls or saw them early on the trails. I think they saw him at some point too. He decided the girls would be his targets. He followed them. I don't think the crime was random, but the victims were random. I think he meant to kill and was prepared to do it. If not that day, then he would return until he found victims. He could have come on earlier days too. Abby and Libby had the misfortune to fit his victim requirements. He gained control of them at the end of the bridge, forced them to where he killed them, did the deed, and walked away.
I also think LE has their suspect.[/QUOTE
I completely agree with your current thoughts; I could have written that paragraph.
I don't they have their suspect though.