Thanks for the link. It's a very good show, both interviews are great.
I especially liked hearing John Q Kelly talk about the case. He's the attorney who is going to court to try to open up the case files. He's a highly experienced attorney when it comes to investigating murders. Here's a link to his wiki profile showing some of the cases he's taken to court, including the civil cases on behalf of Nicole Brown Simpson's estate, Natalie Holloway, Kathleen Savio's estate v her killer/husband Drew Peterson, etc.
https://en.wikipedia.org/wiki/John_Q._Kelly
http://www.nbcchicago.com/investiga...ie-Percy-Murder-Case-Are-Wrong-392659071.html
AFAIK, he's not writing a book about the case, he just decided to investigate it, since he grew up in the area around 1966. He's doing the investigation and lawsuits pro bono.
Like many others who read about this case, Kelly can't understand why it hasn't been solved. He also doesn't believe the investigation is still active and wonders why everything was locked up with little info and little progress. Thousand of LE, millions of dollars and nada. As he points out a murder in the victim's home is the most likely case to be solved.
He goes through a lot of evidence, theories and assertions made by LE that don't make sense. He says it was a crime of passion, not robbery. Valerie was the target, her room was too difficult to access for it to be a random act. He questioned the glass cutting equipment, how quickly Valerie died. He indirectly exonerates the family, as Valerie did struggle and the killer would have been scratched, etc. None of the family had those injuries. He questions pretty much everything many of us have questioned here. IMO, he validates a lot of the questions we have here. We shouldn't make assumptions about evidence, suspects ruled out, etc. until LE can provide better proof of their own assertions. He covers a lot of information quickly, so its worth a listen.
Take the time to listen. It's well worth hearing both interviews if you're interested in this case. I hope he succeeds in getting the files released.
IMO, I still think its likely it was someone the family knew, possibly someone who worked on the campaign.