. >> reporter: back in 2010, we managed to track down ron's mother, carol kempfert, at her home in olympia, washington. >> i didn't just wake up one morning, saying i'll frame my husband today. i'll be happy to take a polygraph. i did not tamper with any evidence. >> reporter: the notion that your son would say that you're capable of acting in such a diabolical fashion is -- it's a damning statement. >> ron -- boy, i don't know if i want to get into this. ron always has been a follower. >> reporter: you think he's gullible? >> critical thinking is not one of ron's better skills. what can i say? and if anyone was ever made for bill to mold and manipulate, it would be ron. >> let's say my father is manipulating me. explain to me how he's been manipulating the arizona justice project and everybody that believes in his innocence and is fighting to get him out. >> reporter: there was another group that believed bill ma come berp's story. the arizona clemency board, which, in a rare move, unanimously recommended his sentence be commuted, saying, an injustice has been done. the board pointed out