her ex-husband, erwin howard, had just flown to his home country of bolivia. s a mechanic who worked for american airlines in l.a. the common thread in all these trips? nearby l.a.x. airport. and so the detective thought, what better place to dump a car. >> l.a.x. is a big place. >> very big place. >> a lot of parking lots. >> a lot of parking lots. and it took a few days. >> you looked through them all. >> every one of them. >> no mercedes. and no shortage of persons of interest. a lot of people close to deede keller were about to be hugged like old friends. >> coming up, detectives were about to get blunt with julie and her brother. >> all of a sudden he says did you have anything to do with your mom's disappearance? >> i think it was more "did you kill your mother?" >> when "dateline" continues. amazon prime video is on xfinity x1. so when you say words like, "show me best of prime video" into this, you'll see awesome stuff like this. discover prime originals like, the emmy award winning the marvelous mrs. maisel, tom clancy's jack ryan, and the man in the h