Here is what I think:
I have always thought the man Liberty German videotaped on the Monon High Bridge is the killer. It would be relatively easy for law enforcement to figure that out with a reasonable amount of certainty. The distance and speed from where he was videotaped to when his voice first appears on Liberty German's recording would be easy to conclude that either he is the killer or he was very near the area where the girls and the bridge guy were talking.
As for the second sketch released on April 22, 2019, I do not think that sketch is at all representative of the description of the man on Liberty German's video. I think because law enforcement is as lost as the rest of us and all the youtubers who zoom in and have created their own personal sketches of bridge guy, they just decided to take a guess that a witness who gave a description of a man from February 2017 might be the killer. So they put that out for the public in the hope that maybe they get lucky.
I think when the man who murdered Liberty German and Abigail Williams gets caught that he will look nothing like the second sketch released on April 22, 2019. And I think it is the confusion between the second released sketch and the Liberty German video that is the reason this case is taking such a long time to solve.
Well, if the murders were planned and there were no witnesses, it is quite enough for the case to take a long time to solve. The video is grainy, the voice is generic, the car is far away from that place (and maybe the owners are lying, but they are not involved in the murders, and did something else that they don't want to get known).
The second sketch is pretty generic for Delphi as well, so if the guy is local and young, I am positive there will be a certain degree of a match.
MOO. X 3. -
The witness who gave the description in 2017 might be lying, but his lies are not quite related to murders. He might have been in that area, on that day, doing something not quite legit (I think it has to do with dating, or something else that had it become known, would destroy his career or family life - but it is not murder).
An example. Let us say it is a man who is well-known and has a relationship with a 17-year-old girl. Just an example. Statutory rape, but not murder.
In the 2017, having given true account of his whereabouts, he'd lose his job, his family, or maybe something worse could ensue. DC said they uncovered tons of other crimes looking for the killer, so why not prosecute this guy?
So the man keeps mum about his minor crime. As it stands today, even if he lied about the bridge, IRL nothing can connect him to the murders, because he was not at that clearing. But at least his secret is safe.
Just an idea. Either this person is connected to murders and lying, or unconnected and lying, but lying he is. Why, we don't know.