that michelle would possibly be. keith morrison: but that didn't happen. not to say, though, her behavior wasn't suspicious. remember the vigil the le family held a week after michelle's disappearance? the one attended by giselle's ex-boyfriend, scott? it turned out, giselle was there too-- sort of. the tracking device showed giselle circling the block as michelle's family pleaded for help. and later, it showed her driving past scott's house. why? ritchie was all but sure now giselle had something to do with michelle's disappearance. the question now was, did she have some help? it was something that we had to look at. if so, who? yeah. dive into her life-- who's her friends? and who can we talk to that knows giselle? keith morrison: ritchie consulted an alameda county assistant da, now deputy district attorney, a guy named butch-- butch ford.