Was he blackmailing (more or less) people, too. The black dude is a politician.
It was a combo of Scott Peterson's calls, his DOCUMENTED fishing trip that caught Peterson. Had the body surfaced and he DIDN'T have that documentation, he might have gotten off. He placed himself at the scene of the body thinking that it would never surface.
I think this follows pretty close to the Anna scenario. He's documented as NOT being there....but only by words. She could have been dead for an hour when 9-11 was called. And there's already a discrepancy as to when she was given the COLD bath. I'm guessing poison....that perhaps is undetectable. A chemist friend of mine said that there is at least one that exists and can't be detected.
This is what it look like to me.