and she identified herself as peggy thomas, explained that she was a friend of brynna and russell douglas>> peggy thomas told the detectives she had been visiting friends over the holidays and explained that she had simply contacted russell in order to ss on a present for brynna. >> she answered all my questions to my satisfaction. there was nothing about that phone call that made me include her in the suspect list. >> but then again, the detective's suspect list was essentially a blank page. there were no names on it from florida or nevada or new mexico, or any of the other places this investigation would eventually lead him. at least, not yet. >> the investigation begins close to home with the dead man's on again-off again wife. >>> coming up -- >> i said, is he hurting you? is he hitting you? and she said, no, really, he isn't physical. it's just emotionally and verbal, but i've hit him a couple times. you don't want to believe the mother of your grandkids would ever be a suspect. >> but a wife as a person of potential interest is just the beginning in this tale of love gone wrong when