brewing. >> and though he wasn't the only person whose interest was piqued by the stories about bill macumberbest-known defense attorneys stopped by the prison one day, the warden insisted he meet bill. >> and he said, i think one of the people you need to talk to is pops. he was clearly a leader in that prison. he was the percentage who young inmates who wanted to do right relied on. >> and so many months later when hammond discovered some very disturbing things about the case, he decided to investigate. and word got to ron now in his 30s and a husband and father himself and his own interest already brewing started to really percolate. >> if it's an open and shut case like it was why is this guy a big name in arizona looking at this case? i just finally said, enough. i called larry hammond late june of 2002. he says, as long as there's no easy way to tell you this, we believe your father is innocent and we believe your mother framed him. >> coming up -- a father and son reunion. >> it came and took me two hours to open and first words were, son, i love you, your father is not a murderer. >>