I came across this article today claiming to be an interview with FBIanon which alledges that solving Seth Rich's murder can unlock pizzagate. I don't know how credible this is or even if it's the same FBIanon that we've seen on 4chan, but I thought maybe you all would know better than me. I've been watching this situation sporadically since pg was banned from Reddit, but never really contributed much. I hope this helps.

http://victuruslibertas.com/2017/05/readers-and-viewers-of-vl-ask-fbi-anon-their-own-questions/