The more I read Tricia's clues the more I think it is someone other than from the FCA case. I saw someone mention John Ramsey, and that he has a book out. it sounds like someone from quite a while ago, from Tricia's quote below:
Tricia: "Let me clear something up. This person has done interviews in the past but hasn't done them for a while. And this interview is a long one. This person will be on the air with me for at least an hour maybe more. No commercials. What I meant was this is a first for this person in that they are sitting down for such a long time to talk and it's been a while since they have done any major media."
underlining mine, I thought CA but she was just on ?Phil, I think it is someone who hasn't done media for quite a while like John Ramsey, I first started reading at Websleuths with the John Benet case, I had been reading at that double-b webbsleuths and then they started charging and all kinds of hoopla going on, then I came to read that case on here. That is my new guess since someone said he has a book out.