I have never shaken the idea that there's a connection between Delphi and Evansdale, but I do know that police have said they do not have a connection. As soon as I read about Mollie, right away I thought there was a connection with Evansdale.
I think one of the reasons that police need as many resources as possible with Mollie is that they are concerned that there is a serial killer in the area and that if they do not stop him now, more girls and young women will vanish.
My guess is that he was getting started with the Evansdale cousins, and I think he was in his 20s at that time. I think he had a familiarity with Meyers Lake because he heard stories from parents and other older extended family about what a great party spot it used to be. I think he knew about Seven Bridges Park because he spent time there for the recreation activities that were there before it shut down. Alternatively, it's a hunting area and it's a family bonding experience to go hunting in places like Seven Bridges Park. I think he is familiar with all the backroads and hunting areas in and around Evansdale and Brooklyn.
Similarity between Evansdale and Delphi is the fact that in both cases at least one girl may have been lured and she brought a friend along, perhaps thinking there was safety in numbers. Both sets of girls - one is slight and one is heavier. Bodies were found near a shallow river in a rural park. None of the girls were straight with their parents about where they were going and what they were doing. Evansdale girls were younger than Delphi girls. Big question is: if they were lured, why didn't police find a digital trace?