We know people lie sometimes and it's possible that Shayne Austin lied about aspects of his involvement in the case. Passing a polygraph doesn't mean squat since it's not admissible in court. It does make one wonder, though, how a guy who said he was innocent and wasn't jailed, went on to commit suicide. Investigators said there was no foul play and his death was ruled a suicide. Be that as it may, Austin doesn't absolve Adams, and Austin can't further implicate anyone else beyond what he already told investigators since dead men can't talk.