blood that had been been there before. forensic testing revealed the blood on the carpet was pams. the couple's son was sleeping over at a friend's house and couldn't shed light on what happened. investigators had to consider whether pam had simply run off. her mother considered to even assume that possibility. >> our next thought is she might have had a boyfriend. i said if she had a boy fribd. i would have known. pam never looked at another man. byron was her sweet heart. >> family family offered a 75