The case of the Rogers family, which has been linked here several times throughout these threads, ( Thanks guys!) certainly has interesting parallels to this case.
I remember reading it years ago, but I read it again the other night, and here are some things that stuck out in my mind, as I read. very, very interesting read, by the way:
http://reprints.longform.org/angels-demons
The Rogers case had multiple victims, three women, (Mom and her two teen daughters). This lead to LE suspecting there was possibly more than one perp, when in fact, there was ONLY one.
People who were Innocent of this crime were strongly suspected publicly, even after LE cleared them, and that threw off leads/tips to the real killer. The girls were enjoying a vacation, when they asked for directions to the Days Inn, and the perp provided that assistance, totally RANDOM encounter. This perp lived locally and stalked the AREA as opposed to specific women. He was `preying on tourists to the sunshine state.
This was the first murder case which employed the use of billboards, (they depicted a handwriting sample, which ultimately proved to be the perps undoing).
The perp escalated quickly once he had the three women isolated on his boat. He left little to no evidence. It was not his first violent crime, and he had killed before. Possibly why he was so confident that he did not hesitate to abduct and murder three women .
The perp gained their trust, and offered to show them something...In this case, the glorious sunset, out on the Bay, in his boat. If a grown woman was willing to trust a total stranger, and bring her two children with her, to a place where they would obviously, be totally isolated from others.... It is possible BG also tricked Abby & Libby similarly...
The perps wife recognized him from the composite drawing and didn't turn him in. She told his sister, she thought it was him, the sister asked him, "did you kill those women' and he said, "no". A neighbor also recognized him, his boat, and his truck, but waited several weeks, out of fear, to turn in a tip, (that tip was lost in the shuffle unfortunately). So people may indeed have already recognized BG but are not calling it in for reasons only they know.
Sadly this case took YEARS to solve. But it is excellent testimony to how many "red Herrings" there can be in cases like these, when there is no obvious motive, just the inner working of a depraved, demented and evil mind.
I think that Abby and Libby met up with the Devil on the prowl. I hope whoever knows him, ( because someone DOES!) turns him in.