we've reached out to both terry hobbs and his attorney, ross sampson, and both have declined to speak with them in 2007, when the dna results were first announced. is it possible, mr. hobbs, that that was your hair? >> sure. it was his son, steven branch, who was murdered, and he's had to deal with this for the last 15 years. >> is there anything that you feel comfortable telling me? >> you live with this every day. and then to have your friends and neighbors look at you and think, is there something else there? that's -- that hurts. >> terry hobbs has never been named a suspect in this case. and authorities stand by their convictions. but his ex-wife, pam, stevie's mother, doesn't know what to believe anymore. do you believe that any of those three young men are guilty? >> at this point, no, i don't. >> you think three innocent men are behind bars? >> i do. >> do you believe your ex-husband could have done that? >> i don't want to believe that, no. i lived with the man another 14, 15 years after my son and if it came out that he was the one that actually committed this crime, i'm goi