Yea hes off his rocker. I want to read the book about this too to get all the information I can, but from what I've gathered it doesn't seem like Byers is the killer either. Fucking insane? For sure, but the physical evidence on him (the knife he gave the producers of the documentary) is a little flimsy in my eyes. To be the most outspoken person involved in this case as he is, to be the most visible and nutty person in both documentaries, all while being guilty I think is giving him more credit than he deserves. He's not that smart. Crazy enough, yea, but he's not smart enough to kill those kids and keep his hands clean for the past 20 years (in reference to the murders, not his other various run-ins with the law and his drug conviction).
But then again, the ineptitude displayed by every part of the "justice system" in that state, top to bottom, I wouldn't be surprised if evidence was there to connect him to the murder and was just overlooked or ignored entirely.
Fascinating story, and I wish I would've gotten involved in it earlier.