I must criticize the insinuation that RA can't be BG because "nobody" sent in a tip for him of 12K recieved in a highly publicized murder case.
We all know murderers never ever go unknown until the 11th hour, and again as we all know, people never say "Wow the woman in that CCTV footage the police posted looks an awful lot like my neighbor, but that can't be her!" How many people have come forward to say "Wow I never would've suspected him" or "Yeah he was a bit odd but I thought he was harmless" when they find out someone close to them is a serial killer?
MOO.