This is a very good article that was in the Daily Mail yesterday. It talks about the ABC documentary and a new book which are both described as definitive accounts of the murders:
As someone who hadn't followed the case closely, I found it useful because it looks at all the strands of the case including Ron Logan, Kegan Kline and the Odinist links. The thing that struck me the most is how badly the case was handled initially which included the police losing hours of recorded interviews and how they misplaced the 'tip sheet' which might have led them to Allen in the early days.
Apparently it was only in 2022 that a volunteer police clerk picked up that Allen's name had slipped through the cracks. This was because he was listed as Richard Allen Whiteman i.e. it looked like Whiteman was his surname when it's actually the road on which he lived. That realisation helped the volunteer to realise from his and other statements that he was likely the 'Bridge Guy.
As someone who had read about his being in solitary confinement and how his behaviour deteriorated whilst there, I did have my doubts as to his guilt because I hadn't followed the case closely. However, reading this article convinces me that they got the right person with the clincher being that he revealed information in his detailed confession to the prison psychologist that only the killer would have known.
I am still very curious about Kegan Kline and the article doesn't go into that much detail about him. It seems such a coincidence that he spoke to Libby the night before the killings. But maybe it was just that - a coincidence. He clearly isn't the 'Bridge Guy' and if there was any other supporting that he was involved, I'm sure that the police would have found been delighted/relieved to have found it and be able to link him to the case.
I was glad to read this article because as I said, I now no longer have any doubts as to his guilt. It's just a pity the initial investigation allowed him to remain free for so many years.